TWI632540B - Display apparatus and method of switching viewing angle thereof - Google Patents

Abstract

A display device includes a light source module, a display module, and a light shutter. The light source module includes a plurality of first color light sources, a plurality of second color light sources, and a plurality of third color light sources. The display module includes a plurality of first dice pixels, a plurality of second dice pixels, and a plurality of third dice pixels. The shutter includes a plurality of first shutter pixels corresponding to the first color light source and the first dice pixel, a plurality of second shutter pixels corresponding to the second color light source and the second dice pixel, and corresponding A third light source and a plurality of third shutter pixels of the third dice pixel. In addition, a method for switching the display angle of the display device is also proposed.

Description

Display device and method for switching display angle of view

The invention relates to an electronic device and a method for switching a viewing angle thereof, and in particular to a display device and a method for switching a display angle.

In recent years, in the related research fields of displays, the anti-peep function of the displays has been paid more and more attention. People hope that while using related products, they can also protect personal privacy, so the need to add anti-peep function to the display is increasing. The scope of application of common privacy monitors has also evolved from notebook computers and LCD monitors to portable consumer video and audio products, such as mobile phones and tablets. In order to achieve the anti-peep function, a common method of anti-peep design is to add an anti-peeper in front of the display. The privacy filter can have a blind-shaped microstructure to shield large-angle display light, so that the display can normally display the image in a certain viewing angle range near the front viewing angle or near it, and can not clearly display the display in a large angle squint viewing angle. image.

However, due to the periodic design of the microstructures in the privacy glass, in some cases, the microstructures in the privacy glass may interfere with the period of the display pixels of the display, thereby forming Moiré on the display screen of the display. pattern). Users often need to select and purchase privacy filters according to the models (or resolutions) of different displays. The privacy angle of the privacy filter is often a fixed value and cannot be adjusted, which limits the convenience of use.

The invention provides a display device and a method for switching the display angle of view, which can achieve a narrow viewing angle effect without manual switching and additional configuration of an optical adjustment structure.

An embodiment of the present invention provides a display device including a light source module, a display module, and a light shutter. The light source module includes a plurality of first color light sources, a plurality of second color light sources, and a plurality of third color light sources. The display module includes a plurality of first dice pixels, a plurality of second dice pixels, and a plurality of third dice pixels, wherein each of the first dice pixels, each of the second dice pixels, and The width of each third dice pixel is P microns. The shutter includes a plurality of first shutter pixels, a plurality of second shutter pixels, and a plurality of third shutter pixels. The plurality of first light shutter pixels respectively correspond to the first color light source and the first color sub pixel. The plurality of second light shutter pixels respectively correspond to the second color light source and the second color sub pixel. The plurality of third light shutter pixels respectively correspond to a third color light source and a third color sub pixel. Among them, the adjacent first shutter pixel, the second shutter pixel, and the third shutter pixel, and the corresponding first, second, and third dice pixels. The element constitutes the first unit. In addition, the adjacent first light shutter pixels, the second light shutter pixels, and the third light shutter pixels, and the corresponding first, second, and third light pixels. Forms a second unit adjacent to the first unit. The shortest diagonal connection distance between the first shutter pixel and the first dice pixel in the first unit forms an angle q2 with the normal direction. The shortest connection distance between the first shutter pixel in the first unit and the first dice pixel corresponding to the first shutter pixel in the second unit forms an angle q3 with the normal direction. The shutter and the display module are separated by T micrometers. The angle of view of a user with respect to the normal direction is q1. The distance between the first dice pixel in the first unit and the first dice pixel in the second unit is P × n micrometers, n = 2 or 3. The display device conforms to: P / tan [sin ^-1 (sin q1 / 1.5)] ≦ T ≦ P × n / tan41.8 °; tan q2 = P / T; and tan q3 = P × n / T.

An embodiment of the present invention provides a method for switching a display viewing angle, including the following steps: providing the display device described above. Executing the wide-view mode, wherein performing the wide-view mode includes the following steps: driving the first color light source, the second color light source, and the third color light source. Driving the first shutter pixel, the second shutter pixel, and the third shutter pixel; and driving the display module. Performing a narrow viewing angle mode, wherein performing the narrow viewing angle mode includes the following steps: driving a first color light source without driving a second color light source and a third color light source, driving a first shutter pixel without driving a second shutter pixel And a third shutter pixel, driving the first dice pixel of the first unit, and not driving the first dice pixel of the second unit.

Another embodiment of the present invention provides a method for switching a display viewing angle, including the following steps: providing a display device similar to the above. The display module further includes a plurality of white sub-pixels. The shutter further includes a plurality of fourth shutter pixels. The plurality of fourth shutter pixels correspond to the white sub pixels, respectively. Among them, the adjacent first light shutter pixels, the second light shutter pixels, the third light shutter pixels, and the fourth light shutter pixels and the corresponding first and second dice pixels, respectively. The pixel, the third dichromatic pixel and the white sub-pixel constitute a first unit. In addition, the adjacent first light shutter pixels, the second light shutter pixels, the third light shutter pixels, and the fourth light shutter pixels, and the corresponding first, second, and second light shutter pixels. The pixel, the third dichromatic pixel, and the white sub-pixel constitute a second unit. Performing a wide-view mode, wherein performing the wide-view mode includes the following steps: driving the first color light source, the second color light source, and the third color light source, driving the first light shutter pixel, the second light shutter pixel, and the third light A shutter pixel and a fourth light shutter pixel; and a driving display module. Performing the narrow viewing angle mode, wherein performing the narrow viewing angle mode includes the following steps: driving the first color light source without driving the second color light source and the third color light source. The first shutter pixel is driven without driving the second shutter pixel and the third shutter pixel. The first sub-pixel of the first unit is driven, and the white sub-pixel of the first unit is not driven.

Based on the above, the display device of the present invention can control the light beams emitted by the light source module by controlling the driving states of the light source module, the display module, and the shutter.

One of the objects of the present invention is to achieve the function of switching the viewing angle without manual switching.

One of the objectives of the present invention is to achieve the effect of narrow viewing angle without manual switching.

One of the objectives of the present invention is to achieve the function of switching the viewing angle without additional configuration of an optical adjustment structure.

One of the objectives of the present invention is to achieve the effect of a narrow viewing angle without additional configuration of an optical adjustment structure.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the display device of FIG. 1 in a narrow viewing angle mode. FIG. 3 is a schematic diagram of a front view direction and a viewing direction direction of the display device of FIG. 1. FIG. 4 is a schematic diagram of a light source module of the display device of FIG. 1. FIG. 5 is a schematic diagram of a shutter of the display device of FIG. 1. Please refer to FIGS. 1 to 5. In this embodiment, the display device 100 includes a light source module 110, a display module 120, a shutter 130, a first polarizing structure 140, a second polarizing structure 150, and a third polarizing structure 160. The display device 100 provides a display light beam from the light emitting surface SE, for example. The normal direction D1 of the display module 120 and the transmission direction D2 of the display light beam have an included angle q1, that is, the viewing angle of the display device 100. There is a distance T (micrometer) between the shutter 130 and the display module 120. The detailed definition of the distance T will be described later.

Referring to FIG. 4, the light source module 110 includes a plurality of first color light sources 112, a plurality of second color light sources 114, and a plurality of third color light sources 116. In this embodiment, the first color light source 112, the second color light source 114, and the third color light source 116 are, for example, a red light source, a green light source, and a blue light source, respectively. In this embodiment, the light source module 110 may be, for example, a Field Sequential Color (FSC) backlight module. The first color light source 112, the second color light source 114, and the third color light source 116 may be sequentially driven. While lit, the present invention is not limited to this. In other words, the field color sequential backlight module allows the red, green, and blue light sources to switch rapidly. Since the switching time is shorter than the time that can be resolved by human vision, the color mixing effect can be produced with the help of the visual residual effect of human eyes. .

The display module 120 includes a plurality of first dice pixels 122, a plurality of second dice pixels 124, and a plurality of third dice pixels 126, wherein each of the first dice pixels 122 and each of the second dice pixels The width P (micrometers) of the dice pixel 124 and each third dice pixel 126 are the same width. The display module 120 includes a first substrate SB1, a display pixel array PDA disposed on the first substrate SB1, and a second substrate SB2. The display pixel array PDA is located between the first substrate SB1 and the second substrate SB2. The display pixel array PDA is composed of a plurality of display pixels PD including a display medium LC1 and a color filter structure CF.

The display medium LC1 may include liquid crystal molecules or other applicable media. The display medium in the following embodiments of the present invention uses liquid crystal molecules as an example, but is not limited thereto. Furthermore, the liquid crystal molecules in the following embodiments of the present invention are preferably exemplified by liquid crystal molecules that can be rotated or switched by a horizontal electric field or liquid crystal molecules that can be rotated or switched by a vertical electric field, but are not limited thereto. In other words, in this embodiment, the display module 120 is a liquid crystal display module.

The color filter structure CF is, for example, a color filter composed of a plurality of red filter patterns R, a plurality of green filter patterns G, and a plurality of blue filter patterns B. The first color pixel 122 includes a red filter pattern R, a display medium LC1, and a first color pixel electrode RP, and the second color pixel 124 includes a green filter pattern G, a display medium LC1, and a second color pixel. Pixel electrode GP, the third color pixel 126 includes a blue filter pattern B, the display medium LC1, and the third color pixel pixel electrode BP, and the first color pixel 122 and the second color pixel are arranged in this order. The pixel 124 and the third dice pixel 126 may form a single display pixel PD.

Please refer to FIG. 1, FIG. 4 and FIG. 5 at the same time, the shutter 130 includes a plurality of first shutter pixels 132, a plurality of second shutter pixels 134, and a plurality of third shutter pixels 136. The first photogate pixel 132 includes a common electrode E1, a display medium LC2, and a first photogate electrode 132E2, and the second photogate pixel 134 includes a common electrode E1, a display medium LC2, and a second photogate picture The pixel electrode 134E2 and the third shutter pixel 136 include a common electrode E1, a display medium LC2, and a third shutter pixel electrode 136E2. The first light shutter pixel 132 corresponds to the first color light source 112 and the first color pixel 122, respectively, and the second light shutter pixel 134 corresponds to the second color light source 114 and the second color pixel 124, respectively. The three light gate pixels 136 correspond to the third color light source 116 and the third color pixel 126, respectively. The shutter 130 includes a third substrate SB3, a shutter pixel array PSA, and a fourth substrate SB4. The shutter pixel array PSA is located between the third substrate SB3 and the fourth substrate SB4. The shutter pixel array PSA is composed of a plurality of shutter pixels PS including a display medium LC2.

In this embodiment, the shutter 130 is a liquid crystal shutter, and the shutter 130 may not have a color filter structure CF. The first light gate pixel 132, the second light gate pixel 134, and the third light gate pixel 136, for example, overlap and correspond to the first dice pixel 122, the second dice pixel 124, and Third dice pixel 126.

The first polarizing structure 140 is located between the first shutter pixel 132 and the light source module 110. The second polarizing structure 150 is located between the first dice pixel 122 and the first shutter pixel 132. The first dice pixel 122 is located between the third polarizing structure 160 and the first shutter pixel 132. In this embodiment, the first polarizing structure 140, the second polarizing structure 150, and the third polarizing structure 160 are, for example, polarizers or polarizing structures adapted to respectively pass light of a specific polarization state, and the present invention is not limited thereto.

Please continue to refer to FIG. 1, FIG. 4, and FIG. 5. In the wide viewing angle mode, the first color light source 112, the second color light source 114, and the third color light source 116 of the light source module 110 are driven and simultaneously provide a light beam and an optical shutter. All the pixels 132, 134, and 136 of the light gates in 130 are also driven simultaneously, and the display module 120 is driven, so that the light beam LB0 provided by the first color light source 112, the second color light source 114, and the third color light source 116 can pass through. Shutter pixels PS and sub-pixels in display pixels PD.

Please refer to FIG. 2, switching from the wide viewing angle mode to the narrow viewing angle mode, and executing the narrow viewing angle mode, the first color light source 112, the second color light source 114, and the third color light source 116 of the light source module 110 are driven in sequence, and the shutter 130 The first shutter pixel 132, the second shutter pixel 134, and the third shutter pixel 136 are also driven in sequence. For example, when the first color light source 112 of the light source module 110 is driven, the first light gate pixel 132 is driven, and the second color light source 114, the third color light source 116, and the second light gate pixel are not driven. 134 and the third shutter pixel 136. When the second color light source 114 of the light source module 110 is driven, the second light gate pixel 134 is driven, and the first color light source 112, the third color light source 116, the first light gate pixel 132, and the third light source are not driven. Light shutter pixel 136. When the third color light source 116 of the light source module 110 is driven, the third light gate pixel 136 is driven, and the first color light source 112, the second color light source 114, the first light gate pixel 132, and the second Light shutter pixels 134. In other words, the first shutter pixel 132, the second shutter pixel 134, and the third shutter pixel 136 in the shutter 130 correspond to the first color light source 112, the first The two-color light source 114 and the third-color light source 116 are respectively turned on in a time sequence.

Therefore, taking the driving of the first color light source 112 and the first shutter pixel 132 as an example, the first color light beams LB1, LB2, LB3, LB4, and LB5 transmission paths of different transmission paths emitted by the first color light source are described below. The first color light beam LB1 passes through the first shutter pixel 132 and the first color pixel 122 in order and is emitted from the light emitting surface SE. The first color beams LB2 and LB3 pass through the first shutter pixel 132 to the second dice pixel 124 and the third dice pixel 126, respectively, to be painted by the second dice pixel 124 and the third dice pixel. Element 126 filters out or reflects. The first color light beams LB4 and LB5 pass through the second shutter pixel 134 and the third shutter pixel 136 to the second polarizing structure 150, respectively, because of the second shutter pixel 134 and the third shutter The sub-pixels 136 are not driven to modulate the polarization directions of the first color light beams LB4 and LB5 and are filtered out by the second polarizing structure 150 as shown in FIG. 2. In this way, the first color light beams LB2, LB3, LB4, and LB5 with a larger viewing angle can be prevented from being emitted from the light emitting surface SE, so that the display device 100 can be achieved without manual switching and / or additional optical adjustment structures Narrow viewing angle effect.

6 is a schematic cross-sectional view of a display module and a shutter of the display device of FIG. 1. Please refer to FIG. 3 and FIG. 6 at the same time. For the convenience of explanation, FIG. 6 only shows the display pixels PD and the shutter pixels PS. In this embodiment, the first light gate pixels 132_1, the second light gate pixels 134_1, the third light gate pixels 136_1, and the corresponding first color pixel pixels 122_1, which are continuously and closely arranged, The second dice pixel 124_1 and the third dice pixel 126_1 constitute a first unit G1. In addition, the first light gate pixel 132_2, the second light gate pixel 134_2 and the third light gate pixel 136_2 and the corresponding first dice pixel 122_2, second dice pixel 124_2, and The third dice pixel 126_2 constitutes a second unit G2 adjacent to the first unit G1. The “adjacent” described in the above description may be “adjacent to each other” or “continuously and closely arranged”, and the present invention is not limited thereto. In other words, each unit G1 or G2 contains the corresponding display pixel PD and shutter pixel PS, and the corresponding display pixel PD and shutter pixel PS in the adjacent unit are adjacent. Another unit of this unit.

In this embodiment, the display device 100 meets the following conditional expressions: P / tan [sin ^-1 (sinq1 / 1.5)] ≦ T ≦ P × n / tan41.8 °; tan q2 = P / T; and tan q3 = P × n / T. Among them, P is the width (micron) of the first, second and third dice pixels 122_1, 122_2, 124_1, 124_2, 124_1, 126_2; q1 is the angle of the user's viewing angle with respect to the normal direction D1; T is the light The distance (in micrometers) between the upper surface of the fourth substrate SB4 of the gate 130 and the lower surface of the first substrate SB1 of the display module 120; n is the distance between two adjacent first dice pixels 122_1, 122_2 Number of sub-pixels; q2 is the shortest diagonal connection distance between the filter pattern of the first photo-gate pixel electrode 132E2 of the first photo-gate pixel 132_1 in the first unit G1 and the first photo-pixel 122_1 The angle between the direction D3 of L1 and the normal direction D1, the normal direction D1 is a direction perpendicular to the light-emitting surface SE; and q3 is the first shutter pixel of the first shutter pixel 132_1 in the first unit G1 The angle between the direction D4 of the shortest connection distance L2 of the filter pattern of the first dice pixel 122_2 corresponding to the first light gate pixel 132_2 in the second unit G2 and the normal direction D1 between the electrode 132E2 and the second light source.

For example, in this embodiment, the n value is 2, and the second dice pixel 124_1 and the third dice pixel 126_1 of the first unit G1 are located at the first dice pixel 122_1 of the first unit G1. And between the first dice pixel 122_2 of the second unit G2. Therefore, the display device 100 complies with P / tan [sin ^-1 (sin q1 / 1.5)] ≦ T ≦ 2P / tan41.8 °; tan q2 = P / T; and tan q3 = 2P / T.

It can be known from the above conditional expression that the display device 100 of this embodiment can adjust the width value P of the first, second, and third dice pixels or the distance value T of the shutter 130 and the display module 120, so that The display beam emitted by the display device 100 will only pass through the display sub-pixels and the shutter sub-pixels of the same unit. The display beam transmitted through the display sub-pixels of one unit and the shutter sub-pixels of the adjacent unit has a total reflection phenomenon due to the angle condition of the incident shutter sub-pixels. In this way, the display beam can be prevented from passing through the shutter pixel of the adjacent unit, and the viewing angle of the display device 100 can be controlled below q1 to achieve the effect of narrow viewing angle.

7 is a schematic cross-sectional view of a display module and a shutter of a display device according to another embodiment of the present invention. Please refer to FIG. 7. The display device 100A in this embodiment is similar to the display device 100 in FIG. 6, but the difference is that in this embodiment, each of the first unit G1 ′ and the second unit G2 ′ It further includes a white sub-pixel 128_1 located in the display pixel PD, and a fourth photo-gate pixel 138_1 located in the shutter pixel PS. The first to third subpixels 122_2 to 126_2 of the second unit G2 'are located between the white subpixel 128_1 of the first unit G1' and the white subpixel 128_2 of the second unit G2 '.

In this embodiment, a single display pixel PD ′ is composed of a first dice pixel 122_1, a second dice pixel 124_1, a third dice pixel 126_1, and a white sub pixel 128_1. The corresponding portions of the color filter structure in the element are a red filter pattern, a green filter pattern, a blue filter pattern, and a transparent pattern, respectively.

Compared with the embodiment of FIG. 6, when the wide-view mode is implemented in this embodiment, the first shutter pixels 132_1, 132_2, the second shutter pixels 134_1, 134_2, and the third shutter pixel are driven. 136_1 and 136_2 also drive the fourth shutter pixel 138_1 and 138_2. Switching from the wide-view mode to the narrow-view mode, and executing the narrow-view mode, drives the first dice pixel 122_1 of the first unit G1 'and also drives the first dice pixel 122_2 of the second unit G2', And the white sub-pixel 128_1 of the first unit G1 is not driven. In addition, in this embodiment, the fourth shutter pixel 138_1 may not be driven further, but the present invention is not limited thereto.

Therefore, in this embodiment, the n value is 3, and the second dice pixel 124_1 and the third dice pixel 126_1 of the first unit G1 'are located in the first dice pixel 122_1 of the first unit G1' And between the first dice pixel 122_2 of the second unit G2 '. The display device 100A complies with P / tan [sin ^-1 (sin q1 / 1.5)] ≦ T ≦ 3P / tan41.8 °; tan q2 = P / T; and tan q3 = 3P / T.

It can be known from the above conditional expressions that under the same conditions as the width P of the first, second, and third dice pixels or the distance T between the shutter 130 'and the display module 120' which are the same as those of the previous embodiment, the present The display device 100A of the embodiment can provide a better narrow viewing angle effect.

FIG. 8 is a schematic top view of a display module according to an embodiment of the present invention. Please refer to FIG. 8. In this embodiment, each display pixel PD in the display module 120A includes the first dice pixel 122A, the second dice pixel, the third dice pixel 126A, and the white sub picture. The length of the pixel 128A is the length of one display pixel PD, and the width is one quarter of the width of the display pixel PD, and the display pixels PD are arranged in sequence with the long sides as adjacent sides to display the pixel PD. The length and width examples are equal. Therefore, when the narrow viewing angle mode is performed, adjacent light-transmitting regions in the horizontal direction are separated by three-quarters of the display pixel PD, and each light-transmitting region is one-quarter of the display-pixel PD. long.

FIG. 9 is a schematic top view of a display module according to another embodiment of the present invention. Please refer to FIG. 9. In this embodiment, the display module 120B is similar to the display module 120A of FIG. 8. The difference between the two is that each display pixel PD in the display module 120B is the first pixel of the first color pixel. The length and width of 122B, the second dice pixel 124B, the third dice pixel 126B, and the white subpixel 128B are the length and width of a half display pixel PD, respectively, and arranged in a 2 × 2 array to form a display Pixel PD, which shows that the length and width of the pixel PD are equal. In addition, in this embodiment, two rows or two columns in the array are alternately arranged in the adjacent display pixels PD as shown in FIG. 9. Therefore, when the narrow viewing angle mode is executed, adjacent light transmitting regions in the horizontal direction are separated by three-half of the display pixel PD length, and each of the light transmitting areas is one-half of the display pixel PD length. . Adjacent transparent regions in the vertical direction are separated by a half of the display pixels PD, and each of the transparent regions is a half of the display pixels PD.

In summary, the display device of the present invention can control the light beams emitted by the light source module by controlling the driving states of the light source module, the display module, and the shutter. Therefore, it is possible to switch the viewing angle without manually switching and / or additionally configuring an optical adjustment structure, thereby achieving a narrow viewing angle effect.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100, 100A‧‧‧ display device
110‧‧‧light source module
120, 120 ', 120A, 120B‧‧‧ Display Module
122, 122_1, 122_2, 122A, 122B‧‧‧ the first dice pixel
124, 124_1, 124_2, 124A, 124B ‧ ‧ second pixel
126, 126_1, 126_2, 126A, 126B‧‧‧ third dice pixel
128_1, 128_2, 128A, 128B‧‧‧ white sub pixels
130, 130'‧‧‧ shutter
132, 132_1, 132_2 ‧‧‧ the first shutter pixel
132E2‧‧‧The first light shutter pixel electrode
134, 134_1, 134_2, ‧‧‧ second shutter pixel
134E2‧‧‧Second Light Gate Pixel Electrode
136, 136_1, 136_2‧‧‧ The third shutter pixel
136E2‧‧‧Three shutter pixel pixels
138_1, 138_2‧‧‧‧ the fourth shutter pixel
140‧‧‧first polarized structure
150‧‧‧second polarized structure
160‧‧‧ third polarized structure
CF, CF'‧‧‧ color filter structure
R‧‧‧ red filter pattern
G‧‧‧ green filter pattern
B‧‧‧ blue filter pattern
D1‧‧‧normal direction
D2, D3, D4‧‧‧ direction
G1, G1'‧‧‧ Unit 1
G2, G2'‧‧‧ Unit 2
LC1, LC2‧‧‧ display media
RP‧‧‧The first pixel pixel electrode
GP‧‧‧Second Pixel Pixel Electrode
BP‧‧‧Third pixel pixel electrode
E1‧‧‧Common electrode
PD, PD'‧‧‧ display pixels
PDA‧‧‧Display Pixel Array
PS‧‧‧Light gate pixels
PSA‧‧‧Light Gate Pixel Array
SB1‧‧‧First substrate
SB2‧‧‧Second substrate
SB3‧‧‧The third substrate
SB4‧‧‧ Fourth substrate
SE‧‧‧light surface
LB0‧‧‧Beam
LB1, LB2, LB3, LB4, LB5‧‧‧First color beam
P‧‧‧Width
T, L1, L2‧‧‧ distance
q1, q2, q3‧‧‧angle

FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the display device of FIG. 1 in a narrow viewing angle mode. FIG. 3 is a schematic diagram of a front view direction and a viewing direction direction of the display device of FIG. 1. FIG. 4 is a schematic diagram of a light source module of the display device of FIG. 1. FIG. 5 is a schematic diagram of a shutter of the display device of FIG. 1. 6 is a schematic cross-sectional view of a display module and a shutter of the display device of FIG. 1. 7 is a schematic cross-sectional view of a display module and a shutter of a display device according to another embodiment of the present invention. FIG. 8 is a schematic top view of a display module according to an embodiment of the present invention. FIG. 9 is a schematic top view of a display module according to another embodiment of the present invention.

Claims (11)

A display device includes: a light source module including a plurality of first color light sources, a plurality of second color light sources, and a plurality of third color light sources; a display module including a plurality of first dice pixels, a plurality of The second dice pixels and a plurality of third dice pixels are formed on a substrate, wherein each of the first dice pixels, each of the second dice pixels, and each of the third The width of the dice pixels is P micrometers; and an optical shutter including: a plurality of first light shutter pixels corresponding to the first color light sources and the first dice pixels respectively; a plurality of second light The gate pixels correspond to the second-color light sources and the second dice pixels; and the third light gate pixels correspond to the third-color light sources and the third dice images. Pixels, wherein: the adjacent first light shutter pixel, the second light shutter pixel, the third light shutter pixel, and the corresponding first dice pixel, the second dice picture The pixel and the third dice pixel constitute a first unit; in addition, the adjacent first light shutter pixel, the second light shutter pixel, and the third light shutter are adjacent to each other. The pixel and the corresponding first dice pixel, the second dice pixel, and the third dice pixel constitute a second unit adjacent to the first unit; a user is opposite to the substrate The angle of view in a normal direction is q1; the direction of the shortest diagonal connection distance between the first shutter pixel and the first dice pixel in the first unit forms an angle q2 with the normal direction; The direction of the shortest connecting distance between the first shutter pixel in the first unit and the first dice pixel corresponding to the first shutter pixel in the second unit is formed with the normal direction Angle q3; the shutter is T micrometers away from the display module; the distance between the first dice pixel in the first unit and the first dice pixel in the second unit is P × n micrometers, n = 2 or 3; and the display device conforms to: (1) P / tan [sin ^-1 (sin q1 / 1.5)] ≦ T ≦ P × n / tan41.8 °; (2) tan q2 = P / T ; And (3) tan q3 = P × n / T. The display device according to item 1 of the scope of patent application, wherein n = 2, the second dice pixel and the third dice pixel of the first unit are the first dice of the first unit Between the pixel and the first dice pixel of the second unit. The display device according to item 1 of the scope of patent application, wherein n = 3, each of the first unit and the second unit further includes a white sub-pixel located in the display module and a fourth shutter A sub-pixel is located in the shutter, and the first sub-pixel, the second sub-pixel, and the third sub-pixel of the second unit are the white sub-pixel and the second unit of the first unit. Between the white sub-pixels of the second unit. The display device according to item 1 of the scope of patent application, further comprising: a first polarizing structure located between the first light shutter pixels and the light source module; a second polarizing structure located between the first light polarizing pixels; A dice pixel and the first light shutter pixels; and a third polarizing structure, wherein the first dice pixels are located in the third polarizing structure and the first light shutter pixels between. The display device according to item 1 of the scope of patent application, wherein the display module is a liquid crystal display module, and the shutter is a liquid crystal shutter. A method for switching display viewing angles includes: providing a display device, the display device comprising: a light source module including a plurality of first color light sources, a plurality of second color light sources, and a plurality of third color light sources; a display module , Including a plurality of first dice pixels, a plurality of second dice pixels, and a plurality of third dice pixels are formed on a substrate; and an optical shutter including: a plurality of first optical shutter pixels Correspond to the first color light sources and the first dice pixels, respectively; the plurality of second light gate pixels correspond to the second color light sources and the second dice pixels; and a plurality of third light pixels The light shutter pixels correspond to the third color light sources and the third light pixels respectively, wherein: the adjacent first light shutter pixels, the second light shutter pixels, and the third light The shutter pixel and the corresponding first dice pixel, the second dice pixel, and the third dice pixel constitute a first unit; in addition, the adjacent first light shutter pixel, the A second shutter pixel, the third shutter pixel, and the corresponding first dice pixel, the second dice pixel, and the The third dice pixel constitutes a second unit adjacent to the first unit; performing a wide viewing angle mode includes: driving the first color light sources, the second color light sources, and the third color light sources; Driving the first light shutter pixels, the second light shutter pixels, and the third light shutter pixels; and driving the display module; and executing a narrow viewing angle mode, including: driving the pixels A first color light source without driving the second color light sources and the third color light sources; driving the first light shutter pixels without driving the second light shutter pixels and the third light shutters A sub-pixel; driving the first dichromatic pixel of the first unit; and not driving the first dichromatic pixel of the second unit. The method for switching the display viewing angle as described in item 6 of the scope of patent application, wherein: the viewing angle of a user with respect to a normal direction of the substrate is q1; each of the first dice pixels, each of the second The width of the dice pixel and each of the third dice pixels is P micrometers. The shortest diagonal connection distance between the first shutter pixel and the first dice pixel in the first unit is Direction forms an angle q2 with the direction of the normal; the shortest of the first photon pixel in the first unit and the first photon pixel corresponding to the first photon pixel in the second unit The direction of the line distance forms an angle q3 with the normal direction; the shutter is T micrometers away from the display module; the first dichromatic pixel in the first unit and the first color in the second unit The sub-pixel distance is P × n micron, n = 2; and the display device conforms to: (1) P / tan [sin ^-1 (sin q1 / 1.5)] ≦ T ≦ P × n / tan41.8 °; (2) tan q2 = P / T; and (3) tan q3 = P × n / T. A method for switching display viewing angles includes: providing a display device, the display device comprising: a light source module including a plurality of first color light sources, a plurality of second color light sources, and a plurality of third color light sources; a display module Including a plurality of first dice pixels, a plurality of second dice pixels, a plurality of third dice pixels, and a plurality of white sub pixels are formed on a substrate; and an optical shutter including: a plurality of The first light shutter pixels correspond to the first color light sources and the first color pixels respectively; the plurality of second light shutter pixels correspond to the second color light sources and the second color pixels respectively. Pixels; a plurality of third light shutter pixels correspond to the third color light sources and the third color pixels; and a plurality of fourth light shutter pixels correspond to the white color pixels, respectively: The adjacent first shutter pixel, the second shutter pixel, the third shutter pixel and the fourth shutter pixel, and the corresponding first dice pixel, the The second dice pixel, the third dice pixel and the white sub pixel constitute a first unit; in addition, the adjacent A light shutter pixel, the second light shutter pixel, the third light shutter pixel and the fourth light shutter pixel, and the corresponding first dice pixel, the second dice picture The pixel, the third dichromatic pixel and the white subpixel constitute a second unit adjacent to the first unit; executing a wide viewing angle mode includes: driving the first color light sources, the second colors A light source and the third color light sources; driving the first light shutter pixels, the second light shutter pixels, the third light shutter pixels, and the fourth light shutter pixels; And driving the display module; and performing a narrow viewing angle mode, including: driving the first color light sources without driving the second color light sources and the third color light sources; driving the first light shutter pixels Without driving the second shutter pixels and the third shutter pixels; driving the first dice pixel of the first unit; and not driving the white sub pixel of the first unit . The method for switching the display angle of view as described in item 8 of the scope of patent application, wherein: the angle of view of a user relative to a normal direction of the substrate is q1; each of the first dice pixel, each of the second The width of the dice pixels, each of the third dice pixels, and each of the white sub pixels is P micrometers. The first shutter pixel and the first dice pixel in the first unit The direction of the shortest diagonal connection distance forms an angle q2 with the normal direction; the first shutter pixel in the first unit corresponds to the first shutter pixel in the second unit. The direction of the shortest connecting distance of the first dice pixel forms an angle q3 with the normal direction; the shutter is T micrometers away from the display module; the first dice pixel and the first dice pixel in the first unit The distance of the first dice pixel in the two units is P × n micrometers, n = 3; and the display device conforms to: (1) P / tan [sin ^-1 (sin q1 / 1.5)] ≦ T ≦ P × n / tan41.8 °; (2) tan q2 = P / T; and (3) tan q3 = P × n / T. According to the method for switching display viewing angles described in item 8 of the scope of patent application, the step of performing the narrow viewing angle mode further includes not driving the fourth shutter pixels. The method for switching the display viewing angle as described in item 8 of the scope of patent application, wherein the white sub-pixel of the second unit is located in the third sub-pixel of the first unit and the first sub-pixel of the second unit Between dice pixels.