TWI507040B - Lcd television - Google Patents

Description

LCD TV

The present invention relates to a television device, and more particularly to a liquid crystal television.

At present, various consumer electronic products such as televisions have entered thousands of households. With the advancement of technology, TV sets have greatly improved in appearance and performance. At present, due to the low radiation and small flickering of the LCD TV, LCD TVs have gradually replaced the traditional CRT (cathode-ray tube) TV and become the mainstream TV.

Under normal circumstances, regardless of CRT TV or LCD TV, only one TV program can be displayed at the same time. At present, although there is already a television capable of displaying picture in picture (PIP), that is, while playing a television program, the content of another program is displayed on one corner of the television screen. However, the image displayed on a small corner of the TV screen is too small to clearly meet the needs of multiple users. Thus, when a family has multiple members, a TV set obviously cannot meet the requirements, and the purchase of a new TV set will inevitably increase the cost.

Therefore, it is necessary to provide a liquid crystal television to solve the above problems.

In view of this, there is provided a liquid crystal television capable of displaying program content corresponding to different television channels at different viewing angles.

A liquid crystal television comprising a receiving unit, a first tuner, a second tuner, a third tuner, a liquid crystal display panel, a controller, a first signal conversion module, a second signal conversion module, and a third signal conversion module The first driving module, the second driving module and the third driving module. The liquid crystal display panel includes a backlight unit, a light guiding unit, and a liquid crystal array unit. The backlight unit is configured to provide a light source for the liquid crystal display panel. The light guiding unit includes a plurality of transparent trapezoidal bodies, and light emitted by the backlight unit is incident from the bottom surface of the trapezoidal body and is respectively emitted from the three surfaces of the trapezoidal body. The liquid crystal array unit includes a plurality of liquid crystal cells having a trapezoidal concave structure, each liquid crystal cell corresponding to a trapezoidal body in the light guiding unit, each liquid crystal cell including a first surface, a second surface, and a third surface, the first The second and third surfaces are respectively parallel to the three surfaces of the trapezoidal body in the light guiding unit and respectively include three liquid crystal molecules arranged in an RGB array and filters respectively corresponding to the three liquid crystal molecules. The liquid crystal molecules arranged in the RGB array of the first, second, and third surfaces of each liquid crystal cell respectively constitute one pixel point, and the liquid crystal molecules on the first surface of all the liquid crystal cells constitute the first liquid crystal molecule array, the first surface The corresponding pixel points of the liquid crystal molecules form a first viewing angle of view, the liquid crystal molecules on the second surface of all the liquid crystal cells constitute an array of second liquid crystal molecules, and the corresponding pixel points of the liquid crystal molecules of the second surface form a second viewing angle surface The liquid crystal molecules on the third surface of all the liquid crystal molecules constitute an array of the third liquid crystal molecules, and the corresponding pixel points of the liquid crystal molecules of the third surface form a third viewing angle.

The controller is configured to select the tuner that receives the television channel signal using the receiving unit. The first signal conversion module is connected to the first tuner, and when the controller selects to receive the television channel signal by using the first tuner, receiving the first television channel signal received by the first tuner and converting it into A first control signal. The first driving module is respectively connected to the first signal conversion module and the first liquid crystal molecular array, and is configured to receive a first control signal generated by the first signal conversion module, and according to the first control The signal is controlled to control the first array of liquid crystal molecules such that the first viewing angle of view displays an image corresponding to the first television channel signal. The second signal conversion module is connected to the second tuner, and when the controller selects to receive the television channel signal by using the second tuner, receiving the second television channel signal received by the second tuner and converting the same Is the second control signal. The second driving module is respectively connected to the second signal conversion module and the second liquid crystal molecular array, and is configured to receive a second control signal generated by the second signal conversion module, and control according to the second control signal The second array of liquid crystal molecules is such that the second viewing angle of view displays an image corresponding to the second television channel signal. The third signal conversion module is connected to the third tuner, and when the controller selects to receive the television channel signal by using the third tuner, receives the third television channel signal received by the third tuner and converts the signal Is the third control signal. The third driving module is respectively connected to the third signal conversion module and the third liquid crystal molecular array, and is configured to receive a third control signal generated by the third signal conversion module, and control according to the third control signal The third liquid crystal molecule array is such that the third viewing angle surface displays an image corresponding to the third television channel signal.

Thus, the liquid crystal display device of the present invention can simultaneously display three different television programs at three different viewing angles.

1‧‧‧LCD TV

10‧‧‧LCD panel

C1‧‧‧First liquid crystal molecular array

C2‧‧‧Second liquid crystal molecular array

C3‧‧‧ third liquid crystal molecular array

20‧‧‧ receiving unit

30‧‧‧ Controller

40‧‧‧First Signal Conversion Module

50‧‧‧Second signal conversion module

60‧‧‧ third signal conversion module

70‧‧‧First drive module

80‧‧‧Second drive module

90‧‧‧ Third drive module

101‧‧‧Backlight unit

102‧‧‧Light guide unit

103‧‧‧LCD array unit

1011‧‧‧Light source

1012‧‧‧reflector

1021‧‧‧ trapezoidal body

1031‧‧‧Liquid Crystal Unit

S1‧‧‧ first surface

S2‧‧‧ second surface

S3‧‧‧ third surface

R‧‧‧Red Filter

G‧‧‧Green Filter

B‧‧‧Blue filter

T1‧‧‧First Tuner

T2‧‧‧second tuner

T3‧‧‧ third tuner

1 is a schematic structural view of a liquid crystal display panel in a first embodiment of the present invention.

2 is a schematic structural view of a surface of a liquid crystal cell in a first embodiment of the present invention.

3 is a schematic view of a viewing angle of a liquid crystal display panel according to a first embodiment of the present invention.

4 is a block diagram of a module of a liquid crystal television according to a first embodiment of the present invention.

1 is a schematic structural view of a liquid crystal display panel according to a first embodiment of the present invention. The liquid crystal display panel 10 includes a backlight unit 101, a light guiding unit 102, and a liquid crystal array unit 103. The backlight unit 101 is configured to provide a light source for the liquid crystal display panel 10, and includes a light source 1011 at each end. In the embodiment, the light source 1011 is a cold cathode tube, and the backlight unit 101 further includes a reflector 1012. After the light emitted from the light source 1011 is reflected, it is emitted toward the light guiding unit 102. The light guiding unit 102 is a glass panel including a plurality of trapezoidal bodies 1021. The liquid crystal array unit 103 includes a plurality of liquid crystal cells 1031 having a trapezoidal concave structure. Each liquid crystal cell 1031 corresponds to a trapezoidal body 1021 of the light guiding unit 102. The liquid crystal cell 1031 includes three faces, and the three faces respectively The three faces of the trapezoidal body 1021 of the light guiding unit 102 are parallel.

Please refer to FIG. 2 together for a schematic structural view of a surface of the liquid crystal cell. The three surfaces of the liquid crystal cell 1031 are respectively a first surface S1, a second surface S2, and a third surface S3, wherein the first surface S1, the second surface S2, and the third surface S3 each include three liquid crystal molecules and are located The red, green, and blue filters R, G, and B in front of the liquid crystal molecules, and the three liquid crystal molecules are arranged in an RGB array to form a pixel point. When the light emitted from the backlight unit 101 is transmitted to the light guiding unit 102, the light emitted by the backlight unit is incident from the trapezoidal bottom surface of the light guiding unit 102, respectively, from the trapezoidal body 1021 due to the refraction of light. The three surfaces are shot perpendicularly. Since the three faces of the liquid crystal cell 1031 are respectively parallel to the three faces of the trapezoidal body 1021 of the light guiding unit 102, the light passes through the light guiding unit 102 and is respectively emitted to the three faces of the liquid crystal cell 1031, respectively The three faces of the liquid crystal cell 103 provide a light source. Since each face of the liquid crystal cell 1031 has an RGB array of three liquid crystal molecules, when the liquid crystal molecules are rotated in parallel with the light, the light is allowed to pass, thereby being due to the corresponding filter The effect is to display a corresponding color. When the liquid crystal molecules are rotated perpendicular to the light, the light is prevented from passing, and different colors are displayed by the rotation of the liquid crystal molecules.

In the present embodiment, the liquid crystal molecules on the first surface S1 of all the liquid crystal cells 1031 constitute the first liquid crystal molecule array C1, and the liquid crystal molecules on the second surface S2 of all the liquid crystal cells 1031 constitute the second liquid crystal molecule array C2. The liquid crystal molecules on the third surface S3 of all the liquid crystal cells 1031 constitute the third liquid crystal molecule array C3. The first, second, and third liquid crystal molecular arrays C3 are respectively controlled by different driving modules (not shown).

Please refer to FIG. 3 together for a schematic view of the viewing angle of the liquid crystal display panel. As shown in the figure, since the liquid crystal molecules on all the first surfaces S1 respectively correspond to one pixel point, the pixel points corresponding to the liquid crystal molecules on all the first surfaces S1 constitute a first viewing angle display surface, in this embodiment. The first viewing angle display surface is front side, that is, the displayed picture is viewed from the front. Since the liquid crystal molecules on all the second surfaces S2 also respectively correspond to one pixel point, the pixel points corresponding to the liquid crystal molecules on the second surface S2 constitute a second viewing angle display surface. In this embodiment, the first The viewing angle of the viewing view is the left bevel, that is, the displayed image is viewed from the left bevel. Similarly, since all the liquid crystal molecules on the third surface S3 also correspond to one pixel point, the pixel points corresponding to the liquid crystal molecules on the third surface S3 constitute a third viewing angle display surface, in this embodiment. The third viewing angle display surface is a right slope, that is, the displayed image is viewed from the right oblique side. In the present embodiment, the sizes of the liquid crystal cell 1031 and the trapezoidal body in the light guiding unit 102 are all on the order of nanometers, so although all the first surfaces S1, all the second surfaces S2, and all the third surfaces S3 There will be no gaps between the liquid crystal molecules, but it will not affect the integrity of the picture displayed by the entire first, second, and third viewing angle display surfaces.

When different driving modules control the rotation of the liquid crystal molecules in the first, second, and third liquid crystal molecular arrays C1, C2, and C3, the first, second, and third viewing angle display surfaces may respectively display different content.

Please refer to FIG. 4 , which is a block diagram of a liquid crystal television according to a first embodiment of the present invention. The liquid crystal television 1 includes the liquid crystal display panel 10, a receiving unit 20, a first tuner T1, a second tuner T2, and a third tuner T3, and a controller 30. The controller 30 is connected between the first, second, and third tuner T1, T2, T3 and the receiving unit 20, and the controller 30 is configured to control a tuner for selecting a television channel signal by using the receiving unit 20. The different tuner can use the receiving unit 20 to receive television signals of different television channels. For example, the controller 30 selects the first tuner T1 to receive the television signal of the first television channel by using the receiving unit 20 (hereinafter referred to as: television). Channel signal), the second tuner T2 is selected to receive the second television channel signal by the receiving unit 20.

The liquid crystal display further includes a first signal conversion module 40, a second signal conversion module 50, a third signal conversion module 60, a first driving module 70, a second driving module 80, and a third driving module 90. The first signal module 40 is connected between the first tuner T1 and the first driving module 70 for converting the television channel signal received by the first tuner T1 into a control signal. The second signal module 50 is connected between the second tuner T2 and the second driving module 60 for converting the television channel signal received by the second tuner T2 into a control signal. The third signal module 60 is connected between the third tuner T3 and the third driving module 90 for converting the television channel signal received by the third tuner T3 into a control signal. The first, second, and third driving modules 70, 80, and 90 are further connected to the first, second, and third liquid crystal molecular arrays C1, C2, and C3, respectively, for receiving the first and second, respectively. Third signal conversion module 40, 50, 60 The control signal controls the rotation of the liquid crystal molecules in the first, second, and third liquid crystal molecular arrays C1, C2, and C3, respectively.

In this embodiment, the controller 30 selects the first tuner T1, the second tuner T2, and the third tuner T3 to receive different television channel signals by using the receiving unit 20 in a time division multiplexing manner. . When the first tuner T1 receives the first television channel signal, the first signal conversion module 40 converts the television channel signal into a control signal, and the first driving module 70 controls the first liquid crystal according to the control signal. The rotation of the liquid crystal molecules in the molecular array C1, so that the first viewing angle display surface of the liquid crystal display panel 10, that is, the front side displays the content corresponding to the television channel signal. When the second tuner T2 receives the second television channel signal, the second signal conversion module 50 receives the television channel signal and converts the television channel signal into a control signal, and the second driving module 70 is configured according to the control signal. The rotation of the liquid crystal molecules in the second liquid crystal molecule array C2 is controlled such that the second viewing angle display surface of the liquid crystal display panel 10 displays the content corresponding to the second television channel signal. When the third tuner T3 receives the third television channel signal, the third signal conversion module 40 converts the television channel signal into a control signal, and the third driving module 70 controls the third liquid crystal molecule according to the control signal. The rotation of the liquid crystal molecules in the array C3 causes the third viewing angle display surface of the liquid crystal display panel 10 to display the content corresponding to the television channel signal. Therefore, the liquid crystal television 1 can display different television programs on the front side, the left side side, and the right side side, respectively.

In another embodiment, the controller 30 can control a tuner to receive the TV channel signal by using the receiving unit 20, for example, when the user only selects to play a TV channel, the controller controls the first tuner T1 to always utilize the The receiving unit 20 receives the television channel signal, thereby displaying the television channel signal on the front side of the liquid crystal display panel 10. Corresponding program contents are not displayed on the left side and the right side of the liquid crystal display panel 10. In this embodiment, when only one television program is played, the controller 30 selects the first tuner T1 to receive the television channel signal by using the receiving unit 20 by default, and displays the content corresponding to the television channel signal through the front surface of the liquid crystal television 1. .

In another embodiment, the controller 30 can also randomly select any two of the first, second, and third tuners T1, T2, and T3 to time-multiplex the receiving unit 20, so that the liquid crystal display The two faces corresponding to the panel 10 respectively display different program contents.

In another embodiment, the LCD TV 1 may not include the first signal conversion module 40, the second signal conversion module 50, and the third signal conversion module 60, but only includes a processing unit. The functions of the first signal conversion module 40, the second signal conversion module 50, and the third signal conversion module 60 are performed in a time-controlled manner. That is, the processing unit and the first, second, and third tuners T1, T2, and T3 are configured to time-divide the television channel signals received by the first, second, and third tuners T1, T2, and T3 into The control signals are transmitted to the first, second, and third drive modules 50, 60, 70 in sequence.

The first, second, and third driving modules 50, 60, and 70 are specifically driving electrodes, and the control manner of the liquid crystal molecular array is the same as that in the prior art, and thus will not be further described herein.

In the embodiment, the LCD TV 1 is specifically a digital LCD TV. The receiving unit 20 includes a wireless receiving module 201 and a digital television cable interface 202. The wireless receiving module 201 is configured to receive and send through a wireless broadcast system. The digital television channel signal 202 is used to receive the digital television channel signal transmitted through the cable. The first, second, and third tuners T1, T2, and T3 are all digital television tuners for receiving corresponding digital powers by the receiving unit 20, respectively. Video channel signal. The first signal conversion module 40, the second signal conversion module 50, and the third signal conversion module 60 are respectively used for the digital television channel signals received by the first, second, and third tuners T1, T2, and T3. Decode.

In the liquid crystal television of the present invention, three different television programs can be simultaneously played by displaying different television programs on the front, left side, and right side of the liquid crystal television.

1‧‧‧LCD TV

10‧‧‧LCD panel

C1‧‧‧First liquid crystal molecular array

C2‧‧‧Second liquid crystal molecular array

C3‧‧‧ third liquid crystal molecular array

20‧‧‧ receiving unit

30‧‧‧ Controller

40‧‧‧First Signal Conversion Module

50‧‧‧Second signal conversion module

60‧‧‧ third signal conversion module

70‧‧‧First drive module

80‧‧‧Second drive module

90‧‧‧ Third drive module

T1‧‧‧First Tuner

T2‧‧‧second tuner

T3‧‧‧ third tuner

Claims (10)

A liquid crystal television comprising: a receiving unit, a first tuner, a second tuner, and a third tuner, wherein the liquid crystal television further comprises: a liquid crystal display panel, the liquid crystal display panel comprising: a backlight unit, The liquid crystal display panel provides a light source; the light guiding unit includes a plurality of transparent trapezoidal bodies, the light emitted by the backlight unit is incident from the bottom surface of the trapezoidal body and respectively emitted from the three surfaces of the trapezoidal body; and the liquid crystal array unit includes a plurality of liquid crystal cells having a trapezoidal concave structure, each liquid crystal cell corresponding to a trapezoidal body in the light guiding unit, each liquid crystal cell comprising a first surface, a second surface and a third surface, the first, second, third The surfaces are respectively parallel to the three surfaces of the trapezoidal body in the light guiding unit and respectively comprise three liquid crystal molecules arranged in an RGB array and filters respectively corresponding to the three liquid crystal molecules; wherein, the first of each liquid crystal cell Liquid crystal molecules arranged in an RGB array on the second and third surfaces respectively constitute a pixel point, and liquid crystal molecules on the first surface of all liquid crystal cells The first liquid crystal molecule array, the pixel points corresponding to the liquid crystal molecules of the first surface form a first viewing angle of view, and the liquid crystal molecules on the second surface of all the liquid crystal cells constitute an array of the second liquid crystal molecules, and the liquid crystal molecules of the second surface correspond to The pixel points form a second viewing angle surface, and the liquid crystal molecules on the third surface of all the liquid crystal molecules constitute an array of the third liquid crystal molecules, and the corresponding pixel points of the liquid crystal molecules on the third surface form a third viewing angle surface; Between the first, second, and third tuners and the receiving unit, for selecting a tuner for receiving a television channel signal by using the receiving unit; the first signal conversion module is connected to the first tuner, Receiving, by the controller, the first television channel signal received by the first tuner when receiving the television channel signal by using the first tuner And converting the first signal into a first control signal; the first driving module is respectively connected to the first signal conversion module and the first liquid crystal molecular array, and is configured to receive the first generated by the first signal conversion module Controlling the signal, and controlling the first liquid crystal molecule array according to the first control signal, such that the first viewing angle view surface displays an image corresponding to the first television channel signal; the second signal conversion module, and the second tuner Connecting, when the controller selects to receive the television channel signal by using the second tuner, receiving the second television channel signal received by the second tuner and converting it into a second control signal; the second driving module, and the The second signal conversion module and the second liquid crystal molecule array are respectively connected to receive the second control signal generated by the second signal conversion module, and control the second liquid crystal molecular array according to the second control signal, so that the The second viewing angle display surface displays an image corresponding to the second television channel signal; the third signal conversion module is connected to the third tuner, and the controller selects to use the third tone Receiving the TV channel signal, receiving the third television channel signal received by the third tuner and converting it into a third control signal; the third driving module, the third signal conversion module, and the third liquid crystal molecule The arrays are respectively connected to receive the third control signal generated by the third signal conversion module, and control the third liquid crystal molecule array according to the third control signal, so that the third viewing angle surface displays the third television channel signal Corresponding image. The liquid crystal television of claim 1, wherein the controller controls the first, second, and third tuners to time-multiplex the receiving unit, so that the first tuner always receives the first television. a channel signal, the second tuner always receives the second television channel signal, and the third tuner always receives the third television channel signal. The liquid crystal television of claim 2, wherein the controller selects one of the first, second, and third tuners to receive the television channel signal by using the receiving unit. The liquid crystal television of claim 1, wherein the controller can randomly select two of the first, second, and third tuners to time-multiplex the receiving unit to receive the television channel signal. The liquid crystal television of claim 1, wherein the liquid crystal television is a digital LCD television. The liquid crystal television of claim 5, wherein the receiving unit comprises a wireless receiving module and a digital television wired interface, the wireless receiving module is configured to receive a digital television signal transmitted by the wireless broadcasting system, the digit The TV cable interface is used to receive digital TV channel signals transmitted over the cable. The liquid crystal television of claim 5, wherein the first, second, and third tuners are respectively digital television tuners for receiving corresponding digital television channel signals by using the receiving unit. The liquid crystal television of claim 7, wherein the first, second, and third signal conversion modules are respectively configured to decode the digital television channel signals received by the first, second, and third tuners. . The liquid crystal television of claim 1, wherein the light emitted from the three surfaces of the trapezoidal body of the light guiding unit is respectively emitted to the first, second, and third surfaces of the liquid crystal cell, when the liquid crystal When the molecular rotation is consistent with the direction of the light, the light passes through, and the corresponding color is displayed by the action of the filter. When the liquid crystal molecule rotates perpendicular to the direction of the light, the light is blocked, and the first, second, and third portions are blocked. The driving module respectively controls the rotation of the liquid crystal molecules in the first, second, and third liquid crystal molecular arrays according to the control signal to display corresponding images. The liquid crystal television according to claim 9, wherein the trapezoidal body in the light guiding unit and the size of the liquid crystal unit are all on the order of nanometers.