CN205301770U - Directional light source device in visual angle and display device - Google Patents

Abstract

The utility model provides a viewing angle directional light source device and a display device, which belong to the technical field of display. The viewing angle directional light source device of the present utility model comprises a base substrate; a light-emitting array arranged on the base substrate, the light-emitting array includes a plurality of light-emitting units; a liquid crystal lens array arranged on the light-emitting array, the The liquid crystal lens array includes a plurality of liquid crystal lens units corresponding to the light-emitting units; each of the liquid crystal lens units includes a first electrode formed on the first substrate and a first electrode formed on the second substrate oppositely arranged. Two electrodes, and a liquid crystal layer arranged between the first electrode and the second electrode, by adjusting the magnitude of the voltage applied to the first electrode and the second electrode, to adjust the light emitting unit The light emitting direction after the emitted light passes through the liquid crystal lens unit. The display device using the viewing angle directional light source device of the present invention can realize switching display between 2D and 3D.

Description

Angle-oriented light source device and display device

technical field

The utility model belongs to the field of display technology, in particular to a viewing angle directional light source device and a display device.

Background technique

Stereoscopic display, that is, 3D display technology, is mainly based on human vision to obtain two images of the same object at different angles, and project these two images into the left and right eyes of the person respectively, so that the images in the left and right eyes of the person With a certain parallax, the brain synthesizes the left-eye image and the right-eye image with parallax to produce depth perception, that is, to form a stereoscopic image display effect.

Existing 3D display technologies are mainly divided into two categories: glasses-type and naked-eye-type. The glasses-type 3D display technology needs to wear special glasses, so it is not conducive to the use of portable devices. More emphasis is placed on naked-eye 3D display technology in mobile electronic products. The naked eye 3D display technology is mainly divided into lenticular lens grating type and slit grating type.

The inventors have found that there are at least the following problems in the prior art: the viewing angles of the light emitted by the backlight for 3D display and the backlight for 2D display are not adjustable. In this utility model, a viewing angle is provided An adjustable directional light source device is used to realize switching display between 2D and 3D.

Utility model content

The technical problem to be solved by the utility model includes, aiming at the above-mentioned problems existing in the existing display device, to provide a viewing angle directional light source device and a display device with an adjustable light source angle.

The technical solution adopted to solve the technical problem of the utility model is a viewing angle directional light source device, comprising:

Substrate substrate;

A light-emitting array disposed on the base substrate, the light-emitting array including a plurality of light-emitting units;

A liquid crystal lens array arranged on the light emitting array, the liquid crystal lens array includes a plurality of liquid crystal lens units corresponding to the light emitting units one by one; wherein,

Each of the liquid crystal lens units includes oppositely disposed first electrodes formed on a first substrate and second electrodes formed on a second substrate, and disposed between the first electrodes and the second electrodes. The liquid crystal layer, by adjusting the magnitude of the voltage applied on the first electrode and the second electrode, to adjust the direction of the light emitted by the light emitting unit after passing through the liquid crystal lens unit.

Preferably, the plurality of light emitting units include electroluminescence chips of different wavelengths.

Further preferably, the electroluminescent chips with different wavelengths include: red light emitting chips, green light emitting chips, and blue light emitting chips.

Preferably, the plurality of light emitting units are white light emitting chips.

Preferably, the base substrate is composed of a glass or copper substrate, and graphene, gallium nitride or silicon material disposed on the substrate.

The technical solution adopted to solve the technical problem of the utility model is a display device, which includes the above-mentioned viewing angle directional light source device.

Preferably, the display device further includes a display module disposed on the light emitting surface side of the viewing angle directional light source device.

Further preferably, the display module includes a pixel array, and the pixel array includes pixel units that correspond one-to-one to the light emitting units.

Further preferably, the plurality of light emitting units in the viewing angle directional light source device include electroluminescent chips with different wavelengths, and the display module includes an array substrate and an array substrate oppositely arranged.

Further preferably, the multiple light emitting units in the viewing angle directional light source device are white light emitting chips, and the display module includes an array substrate and a color filter substrate oppositely arranged.

The utility model has the following beneficial effects:

Applying the viewing angle directional light source device of the present invention to a display device, the light-emitting units on the base substrate can be set corresponding to the corresponding pixel units in the display module, and then adjusted to match the first electrode and the second electrode of each liquid crystal lens unit. The magnitude of the voltage on the two electrodes controls the deflection angle of the liquid crystal between the first electrode and the second electrode, and the overall non-uniform distribution of the optical refractive index gradient changes, thereby controlling the passage of the light-emitting unit under the liquid crystal lens unit through the liquid crystal lens unit The direction of the light after that. That is to say, when the display device performs 3D display, the liquid crystal deflection direction of each liquid crystal lens unit can be adjusted, and the light output direction of the light emitting unit can be controlled, so that the light emitted by the light emitting unit passes through the corresponding pixel unit to form a left eye. The image and the right eye image finally reach the human eye to form a 3D display screen. When the display device performs 2D display, no voltage may be applied to the first electrode and the second electrode of the liquid crystal lens unit, so that the light-emitting unit completely passes through the liquid crystal lens unit, so as to realize the 2D display of the display device. The viewing angle directional light source device of the present utility model can be applied to the switching between 2D and 3D display of a display device, and can accurately realize switching of multiple viewing angles.

Description of drawings

FIG. 1 is a schematic diagram of a viewing angle directional light source device according to Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram of a display device according to Embodiment 2 of the present invention.

Wherein the reference signs are: 10, viewing angle directional light source device; 20, display module; 1, base substrate; 2, light-emitting unit; 3, liquid crystal lens unit; 31, first base; 32, second base; 33, The first electrode; 34, the second electrode; 35, the liquid crystal layer; 4, the pixel unit.

detailed description

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

As shown in FIG. 1 , this embodiment provides a viewing angle directional light source device 10, comprising: a base substrate 1; a light-emitting array disposed on the base substrate 1, the light-emitting array includes a plurality of light-emitting units 2; The liquid crystal lens array on the light-emitting array, the liquid crystal lens array includes a plurality of liquid crystal lens units 3 corresponding to the light-emitting units 2; wherein, each of the liquid crystal lens units 3 includes oppositely arranged, The first electrode 33 formed on the first substrate 31 and the second electrode 34 formed on the second substrate 32, as well as the liquid crystal layer 35 arranged between the first electrode 33 and the second electrode 34, are adjusted by adjusting The magnitude of the voltage applied on the first electrode 33 and the second electrode 34 is used to adjust the light emitting direction of the light emitted by the light emitting unit 2 after passing through the liquid crystal lens unit 3 .

Specifically, the viewing angle directional light source device 10 in this embodiment is applied to a display device. At this time, the light emitting unit 2 on the base substrate 1 can be set corresponding to the corresponding pixel unit 4 in the display module 20, and then adjusted to each The magnitude of the voltage on the first electrode 33 and the second electrode 34 on the liquid crystal lens unit 3 controls the deflection angle of the liquid crystal between the first electrode 33 and the second electrode 34, and the whole presents a non-uniform distribution of optical refractive index gradient change , so as to control the light emitting direction of the light emitting unit 2 under the liquid crystal lens unit 3 after passing through the liquid crystal lens unit 3 . That is to say, when the display device performs 3D display, the liquid crystal deflection direction of each liquid crystal lens unit 3 can be adjusted, and the light output direction of the light emitting unit 2 can be controlled, so that the light emitted by the light emitting unit 2 can pass through the corresponding pixel unit 4. , forming a left-eye image and a right-eye image, and finally reaching the human eye to form a 3D display screen. When the display device performs 2D display, no voltage may be applied to the first electrode 33 and the second electrode 34 of the liquid crystal lens unit 3, so that the light emitting unit 2 completely passes through the liquid crystal lens unit 3 to realize 2D display of the display device. The viewing angle directional light source device 10 in this embodiment can be applied in the switching between 2D and 3D display of a display device, and can precisely realize the switching of multiple viewing angles.

Wherein, the plurality of light emitting units 2 in this embodiment include electroluminescent chips with different wavelengths. That is to say that a plurality of light-emitting units 2 includes a plurality of organic electroluminescent chips that emit light of different colors, and are selected as red light-emitting chips, green light-emitting chips, and blue light-emitting chips, and of course organic electroluminescent chips of other colors can also be included. Chips, such as wine red light-emitting chips, yellow light-emitting chips, etc. The viewing angle directional light device of the light-emitting unit 2 is used, and it is arranged corresponding to the pixel unit 4 of the corresponding color in the display module 20. At this time, the color filter in the display module 20 can be omitted, thereby reducing the cost and benefiting Mass production of display devices. It should be noted that the size of the light emitting unit 2 is on the order of microns.

Wherein, the multiple light emitting units 2 in this embodiment are white light emitting chips. For a display device using the viewing angle directional light source device 10 of this white light-emitting chip, a color filter needs to be installed in the display module 20 at this time, so as to realize full-color display.

Wherein, in this embodiment, the base substrate 1 is composed of a glass or copper substrate, and graphene, gallium nitride or silicon material disposed on the substrate. Of course, the corresponding base substrate 1 material can also be selected according to specific needs.

In this embodiment, the materials used for the first electrode 33 and the second electrode 34 of the liquid crystal lens unit 3 are transparent conductive materials such as ITO (indium tin oxide).

Example 2:

As shown in FIG. 2 , this embodiment provides a display device, which includes the viewing angle directional light source device 10 in Embodiment 1, so the display device of this example can realize switching display between 2D and 3D.

Wherein, the viewing angle directional light source device 10 in the display device of this embodiment is provided with a display module 20 on the light-emitting surface side, and the display module 20 includes a pixel array, and the pixel array includes a plurality of pixel units 4, and the pixel unit 4 and the light emitting unit 2 one-to-one correspondence.

What needs to be explained here is that polarizers are arranged on the light incident surface and the light exit surface of the display module 20 , and this structure is the same as that in the prior art, and will not be described in detail here.

As a specific structure of the display device in this embodiment, the plurality of light emitting units 2 in the viewing angle directional light source device 10 include electroluminescence chips of different wavelengths, that is to say, the plurality of light emitting units 2 include a plurality of emitting light of different colors. The organic electroluminescence chip can be selected as red light-emitting chip, green light-emitting chip, blue light-emitting chip, of course, it can also include organic electroluminescent chips of other colors, such as: wine red light-emitting chip, yellow light-emitting chip, etc. . The viewing angle directional light device of the light-emitting unit 2 is used, and it is arranged corresponding to the pixel unit 4 of the corresponding color in the display module 20. At this time, the color filter in the display module 20 can be omitted, thereby reducing the cost and benefiting Mass production of display devices. At this time, the display module 20 disposed on the light emitting surface side of the viewing angle directional light source device 10 includes an array substrate and an array substrate oppositely disposed.

As another specific structure of the display device in this embodiment, the plurality of light emitting units 2 in the viewing angle directional light source device 10 are white light emitting chips, and at this time, the display module 20 disposed on the light emitting surface side of the viewing angle directional light source device 10 It includes an array substrate and a color filter substrate oppositely arranged.

It can be understood that, the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these variations and improvements are also regarded as the protection scope of the present utility model.

Claims (10)

1. A viewing angle directional light source apparatus, comprising:

a substrate base plate;

a light emitting array disposed on the substrate base, the light emitting array including a plurality of light emitting cells;

the liquid crystal lens array is arranged on the light emitting array and comprises a plurality of liquid crystal lens units which correspond to the light emitting units one by one; wherein,

each liquid crystal lens unit comprises a first electrode formed on a first substrate, a second electrode formed on a second substrate and a liquid crystal layer arranged between the first electrode and the second electrode, wherein the first electrode and the second electrode are oppositely arranged, and the light emitting direction of light emitted by the light emitting unit after passing through the liquid crystal lens unit is adjusted by adjusting the voltage applied to the first electrode and the second electrode.

2. The viewing angle-oriented light source device of claim 1, wherein the plurality of light-emitting units comprise electroluminescent chips of different wavelengths.

3. The viewing angle-oriented light source device of claim 2, wherein the electroluminescent chips of different wavelengths comprise: red light emitting chip, green light emitting chip, blue light emitting chip.

4. The viewing angle-oriented light source device of claim 1, wherein the plurality of light emitting units are white light emitting chips.

5. The viewing angle-oriented light source device of claim 1, wherein the substrate is composed of a base made of glass or copper material, and graphene or gallium nitride or silicon material disposed on the base.

6. A display device comprising the viewing angle directional light source device according to any one of claims 1 to 5.

7. The display device according to claim 6, further comprising a display module disposed on a light exit surface side of the viewing angle directional light source device.

8. The display device according to claim 7, wherein the display module comprises a pixel array including pixel units in one-to-one correspondence with the light emitting units.

9. The display device according to claim 7, wherein the plurality of light emitting units in the viewing angle-oriented light source device comprise electroluminescent chips with different wavelengths, and the display module comprises an array substrate and a pair of opposite substrates.

10. The display device according to claim 7, wherein the plurality of light emitting units in the viewing angle-oriented light source device are white light emitting chips, and the display module comprises an array substrate and a color filter substrate which are arranged oppositely.