CN211264018U - Liquid crystal display and television - Google Patents
Liquid crystal display and television Download PDFInfo
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- CN211264018U CN211264018U CN201922498624.1U CN201922498624U CN211264018U CN 211264018 U CN211264018 U CN 211264018U CN 201922498624 U CN201922498624 U CN 201922498624U CN 211264018 U CN211264018 U CN 211264018U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 119
- 239000011521 glass Substances 0.000 claims abstract description 65
- 238000004891 communication Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a liquid crystal display and a television, which comprises a control unit, a backlight unit, light control glass and a liquid crystal display screen, wherein the backlight unit, the light control glass and the liquid crystal display screen are arranged in sequence, and pixel switches of the light control glass are arranged in one-to-one correspondence with pixel units of the liquid crystal display screen; the control unit is used for controlling the liquid crystal display screen to display images and controlling the pixel switch of the light control glass to be turned on or turned off. When the color of the pixel unit on the liquid crystal display screen is black, the corresponding pixel switch is in a closed state, the pixel unit on the liquid crystal display screen does not have redundant backlight to penetrate, and when the color of the pixel unit on the liquid crystal display screen is not black, the corresponding pixel switch is in an open state, and the liquid crystal display screen displays pixels. The utility model discloses utilize light control glass control to be shaded and do not see through the pixel unit when the pixel unit colour is black, reduced the minimum luminance that shows the image to the contrast of LCD's image has been improved greatly.
Description
Technical Field
The utility model relates to a liquid crystal display field especially relates to a liquid crystal display and TV set.
Background
The LCD (liquid crystal display) is taken as a light-transmitting display device, the required brightness of display is required to be provided by backlight during display, because the backlight light source of the LCD is always in the state of the highest brightness, the display of a full white image and the display of a full black image are realized by the deflection of the liquid crystal and the directivity of the second polaroid, but the light of the backlight source is required to be completely blocked, the realization of the complete black of the screen is difficult, so that the light leakage phenomenon can be generated when a black picture is displayed, the brightness of black pixel points is larger, and the problems of lower contrast (the difference between the full white brightness and the full black brightness) and poor picture display effect are caused. However, since the OLED (organic light emitting diode) is self-luminous, a pixel unit which does not need to be displayed does not emit light, and thus the LCD has difficulty in achieving the contrast effect of the OLED.
In order to achieve a good contrast effect of the LCD, a local light control technique is adopted, that is, the backlight of the LCD is divided into a plurality of small areas, and the brightness of the backlight is adjusted according to the gray scale of the content of the liquid crystal display corresponding to the small areas, and an 8-division or 16-division backlight is usually adopted. The implementation method needs more LED lamps, which is not only expensive, but also the LCD cannot achieve the pixel level light control effect like OLED due to the limitation of its principle.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a liquid crystal display and a television, which aim to improve the contrast of the liquid crystal display.
The technical scheme of the utility model as follows:
a liquid crystal display comprises a control unit, a backlight unit, light control glass and a liquid crystal display screen which are sequentially arranged, wherein pixel switches of the light control glass are arranged in one-to-one correspondence with pixel units of the liquid crystal display screen; the control unit is respectively connected with the light control glass and the liquid crystal display screen, and the control unit is used for controlling the liquid crystal display screen to display images and simultaneously controlling the pixel switch of the light control glass to be turned on or turned off.
The liquid crystal display, wherein, the control unit includes a main control module and a driving module, the main control module is connected with the driving module; the main control module is used for outputting an image signal to the liquid crystal display screen, and the liquid crystal display screen displays an image according to the image signal; the driving module is used for controlling the pixel switch of the light control glass to be turned on or turned off.
The liquid crystal display, wherein, light control glass with the laminating of liquid crystal display sets up.
The liquid crystal display is characterized in that the light control glass adopts liquid crystal glass or a digital micromirror.
The liquid crystal display, wherein, the main control module includes SOC main control chip.
The liquid crystal display, wherein, drive module with the master control module realizes signal connection through I2C serial communication and SYNC technique.
The liquid crystal display further comprises a power supply unit, wherein the power supply unit is used for providing power supplies required by the backlight unit, the control unit, the light control glass and the liquid crystal display screen.
In the liquid crystal display, the backlight unit adopts a direct type backlight mode or a side type backlight mode.
A television set comprising a liquid crystal display as described above.
Has the advantages that: the utility model adds a light control glass between the backlight unit and the liquid crystal display screen, and the pixel switches of the light control glass are arranged corresponding to the pixel units of the liquid crystal display screen one by one; the control unit is respectively connected with the light control glass and the liquid crystal display screen, and the control unit is used for controlling the liquid crystal display screen to display images and simultaneously controlling the pixel switch of the light control glass to be turned on or turned off. The pixel switch on the light control glass is used for controlling the pixel point on the liquid crystal display screen to display or not display, when the color of the pixel unit on the liquid crystal display screen is black, the corresponding pixel switch is in a closed state, backlight cannot penetrate through the pixel unit, the pixel unit on the liquid crystal display screen does not have redundant backlight penetration, when the color of the pixel unit on the liquid crystal display screen is not black, the corresponding pixel switch is in an open state, the backlight penetrates through the pixel unit, and the liquid crystal display screen displays the color of the pixel unit. The utility model discloses utilize light control glass control to be shaded and not see through the pixel unit when the pixel unit colour black, reduced the minimum luminance that shows the image to the contrast of LCD's image has been improved greatly.
Drawings
Fig. 1 is a schematic diagram of a circuit control provided by an embodiment of the present invention.
Fig. 2 is a schematic diagram of a pixel switch and a pixel unit in one-to-one correspondence according to an embodiment of the present invention.
Reference numerals:
1. a control unit; 2. a backlight unit; 3. light control glass; 4. a liquid crystal display screen; 5. a main control module; 6. a drive module; 7. a power supply unit; 8. a pixel switch; 9. a pixel unit.
Detailed Description
The utility model provides a LCD and TV set, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention
Due to the limitation of the principle of the liquid crystal display, when black pixel points are displayed, the liquid crystal can enable light to penetrate through, the light which is blocked at the moment mainly penetrates through two polarizers which are perpendicular to each other, but the light can be reflected in the transmission process, so that the direction of the light is changed, the light of a backlight source cannot be completely blocked, the brightness of the black pixel points is large, and the image contrast of the display is low.
In order to solve the problem, the utility model discloses an increase one deck accuse light glass, accuse light glass's pixel switch with liquid crystal display's pixel unit one-to-one sets up, the control unit control opening and closing of the glass's of accuse light glass's of simultaneous control of liquid crystal display picture pixel switch for when pixel unit's colour is black, the pixel switch on the accuse light glass that corresponds is closed, has prevented seeing through of being shaded, has reduced the luminance of black pixel unit, thereby improves the contrast of whole picture.
Referring to fig. 1 and fig. 2, in an embodiment of the liquid crystal display of the present invention, the liquid crystal display includes a control unit 1, and a backlight unit 2, a light control glass 3, and a liquid crystal display 4, which are sequentially disposed, wherein a pixel switch 8 of the light control glass 3 is disposed in one-to-one correspondence with a pixel unit 9 of the liquid crystal display 4; the control unit 1 is respectively connected with the light control glass 3 and the liquid crystal display 4, and the control unit 1 is used for controlling the liquid crystal display 4 to display images and simultaneously controlling the pixel switch 8 of the light control glass 3 to be turned on or turned off.
In the present embodiment, the number and arrangement of the pixel switches 8 on the light control glass 3 are the same as those of the pixel units 9 on the liquid crystal display 4, and the pixel switches 8 of the light control glass 3 are arranged in one-to-one correspondence with the pixel units 9 of the liquid crystal display 4.
The control unit 1 transmits an image signal to the liquid crystal display screen 4, the liquid crystal display screen 4 adjusts the color of each pixel unit 9 according to the image signal to display an image, when the color of the pixel unit 9 on the liquid crystal display screen 4 is black, the control unit 1 controls the corresponding pixel switch 8 on the light control glass 3 to be closed, light emitted by the backlight unit 2 cannot penetrate through the pixel unit 9, and black is displayed on the liquid crystal display screen 4 without redundant backlight penetration; when the color of the pixel unit 9 on the liquid crystal display 4 is not black, the control unit 1 controls the corresponding pixel switch 8 on the light control glass 3 to be opened, the light emitted by the backlight unit 2 passes through the pixel switch 8, and the color of the pixel unit 9 is displayed on the liquid crystal display 4. By controlling the pixel switch 8 of the light control glass 3 to be opened and closed, the pixel unit 9 which needs to display the black pixel point on the liquid crystal display screen 4 has no backlight penetration, so that the brightness of the black pixel point is reduced, the minimum brightness of the displayed image is reduced, and the image contrast of the liquid crystal display is greatly improved.
In one embodiment, the control unit 1 comprises a main control module 5 and a drive module 6, the main control module 5 being connected with the drive module 6; the main control module 5 is used for outputting an image signal to the liquid crystal display 4, and the liquid crystal display 4 displays an image according to the image signal; the driving module 6 is used for controlling the pixel units 9 of the light control glass 3 to be switched on or switched off.
Specifically, the main control module 5 transmits an image signal to the liquid crystal display 4, the liquid crystal display 4 adjusts the color of each pixel unit 9 according to the image signal to display an image, meanwhile, the main control module 5 transmits the image signal to the driving module 6, and the driving module 6 controls the pixel units 9 of the light control glass 3 to be opened and closed according to the image signal. When the color of the pixel unit 9 on the liquid crystal display 4 is black, the driving module 6 controls the corresponding pixel switch 8 on the light control glass 3 to be turned off, and when the color of the pixel unit 9 on the liquid crystal display 4 is not black, the driving module 6 controls the corresponding pixel switch 8 on the light control glass 3 to be turned on.
Further, the main control module 5 includes an SOC (System-on-a-Chip) main control Chip. The SOC chip is a chip of an integrated circuit, can effectively reduce the development cost of electronic/information system products, shorten the development period, and improve the competitiveness of products, and is the most important product development mode to be adopted in the future industry.
Further, the driving module 6 and the main control module 5 are connected through I2C (Inter-Integrated Circuit) serial communication and SYNC (Synchronization) technology to realize signal connection.
Specifically, the I2C serial communication is used for communication connection between the driving module 6 and the main control module 5, the SYNC technology is used for synchronizing image display of the liquid crystal display 4 and control of the driving module 6 on the pixel switch 8, and the main control module 5 transmits the image signal to the liquid crystal display 4 and simultaneously transmits the image signal to the driving module 6 through I2C serial communication; the image display of the liquid crystal display screen 4 and the control of the driving module 6 on the pixel switch 8 are synchronously performed through the SYNC technology, when the pixel unit 9 displays black on the display screen, the driving module 6 simultaneously controls the pixel switch 8 to be closed, and when the pixel unit 9 does not display black on the display screen, the driving module 6 simultaneously controls the pixel switch 8 to be opened.
In one embodiment, the light control glass 3 is attached to the liquid crystal display 4.
Because the light emitted by the backlight source is divergent and is not completely transmitted along the light irradiation direction, the light control glass 3 is attached to the liquid crystal display screen 4, so that the situation that the backlight possibly partially enters the pixel unit 9 corresponding to the pixel switch 8 in the closed state after penetrating through the pixel switch 8 in the open state is avoided, when the liquid crystal display screen 4 displays black pixels, the light which is reflected in other modes and penetrates through the pixel unit 9 is reduced, and the image contrast of the liquid crystal display is further improved.
In one embodiment, the light control glass 3 is liquid crystal glass or a digital micromirror.
The liquid crystal glass or the digital micromirror is provided with pixel switches 8 corresponding to the pixel units 9 of the liquid crystal display 4 one to one. When the liquid crystal glass is adopted, each pixel switch 8 on the liquid crystal glass is a small liquid crystal unit, the control unit 1 controls the pixel switches 8 to be switched off and on by controlling the arrangement mode of liquid crystal molecules of the liquid crystal units, when the control unit 1 controls the pixel switches 8 to be switched on, the liquid crystal glass is electrified, at the moment, the liquid crystal molecules in the liquid crystal units are arranged in order, and backlight can pass through the pixel switches 8; when the control unit 1 controls the pixel switch 8 to be turned off, the liquid crystal glass is not electrified, and the liquid crystal molecules in the liquid crystal cell are arranged disorderly, so that the light rays incident from the control unit 2 are blocked, and the backlight cannot pass through the pixel switch 8. Each pixel switch 8 on the digital micromirror is a rotatable micromirror, and the control unit 1 controls the emitting angle of light by controlling the position or the rotation angle of each rotatable micromirror, thereby controlling the turning-off and turning-on of the pixel switch 8.
In one embodiment, the device further comprises a power supply unit 7, wherein the power supply unit 7 is connected with the control unit 2, the control unit 1, the light control glass 3 and the liquid crystal display 4, and the power supply unit 7 is used for supplying power required by the control unit 2, the control unit 1, the light control glass 3 and the liquid crystal display 4.
In one embodiment, the control unit 2 employs a direct type backlight mode or a side type backlight mode.
The embodiment also provides a television, which comprises the liquid crystal display, wherein the liquid crystal display reduces the minimum brightness of a displayed image, so that the image contrast of the television is greatly improved.
To sum up, the utility model adds a light control glass between the control unit and the liquid crystal display screen, and the pixel switches of the light control glass are arranged corresponding to the pixel units of the liquid crystal display screen one by one; the control unit is respectively connected with the light control glass and the liquid crystal display screen, and the control unit is used for controlling the liquid crystal display screen to display images and simultaneously controlling the opening or closing of the pixel units of the light control glass. The pixel switch on the light control glass is used for controlling the pixel point on the liquid crystal display screen to display or not display, when the color of the pixel unit on the liquid crystal display screen is black, the corresponding pixel switch is in a closed state, backlight cannot penetrate through the pixel unit, the pixel unit on the liquid crystal display screen does not have redundant backlight penetration, when the color of the pixel unit on the liquid crystal display screen is not black, the corresponding pixel switch is in an open state, the backlight penetrates through the pixel unit, and the liquid crystal display screen displays the color of the pixel unit. The utility model discloses utilize light control glass control to be shaded and not see through the pixel unit when the pixel unit colour black, reduced the minimum luminance that shows the image to the contrast of LCD's image has been improved greatly.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. The liquid crystal display is characterized by comprising a control unit, and a backlight unit, light control glass and a liquid crystal display which are sequentially arranged, wherein pixel switches of the light control glass are arranged in one-to-one correspondence with pixel units of the liquid crystal display; the control unit is respectively connected with the light control glass and the liquid crystal display screen, and the control unit is used for controlling the liquid crystal display screen to display images and simultaneously controlling the pixel switch of the light control glass to be turned on or turned off.
2. The LCD of claim 1, wherein the control unit comprises a main control module and a driving module, the main control module is connected with the driving module; the main control module is used for outputting an image signal to the liquid crystal display screen, and the liquid crystal display screen displays an image according to the image signal; the driving module is used for controlling the pixel switch of the light control glass to be turned on or turned off.
3. The lcd of claim 1, wherein the light management glass is attached to the lcd.
4. The liquid crystal display of claim 1, wherein the light control glass is liquid crystal glass or a digital micromirror.
5. The lcd of claim 2, wherein the main control module comprises an SOC main control chip.
6. The LCD of claim 2, wherein the driving module and the main control module are connected by I2C serial communication and SYNC technology.
7. The liquid crystal display of claim 1, further comprising a power supply unit for supplying power to the backlight unit, the control unit, the light control glass, and the liquid crystal display panel.
8. The liquid crystal display of claim 1, wherein the backlight unit adopts a direct type backlight mode or a side type backlight mode.
9. A television set comprising a liquid crystal display according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498624.1U CN211264018U (en) | 2019-12-31 | 2019-12-31 | Liquid crystal display and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498624.1U CN211264018U (en) | 2019-12-31 | 2019-12-31 | Liquid crystal display and television |
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| Publication Number | Publication Date |
|---|---|
| CN211264018U true CN211264018U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922498624.1U Active CN211264018U (en) | 2019-12-31 | 2019-12-31 | Liquid crystal display and television |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839811A (en) * | 2022-05-20 | 2022-08-02 | 京东方科技集团股份有限公司 | Backlight assembly, display panel and display device |
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2019
- 2019-12-31 CN CN201922498624.1U patent/CN211264018U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839811A (en) * | 2022-05-20 | 2022-08-02 | 京东方科技集团股份有限公司 | Backlight assembly, display panel and display device |
| CN114839811B (en) * | 2022-05-20 | 2023-10-13 | 京东方科技集团股份有限公司 | Backlight assembly, display panel and display device |
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