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A curved liquid crystal display device

A liquid crystal display device and curved surface technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as the decrease of light transmittance, uneven distribution of transmittance, and influence on display effect of curved liquid crystal panels, and achieve low cost , flexible mode, uniform brightness effect

Active Publication Date: 2018-03-16
TPV DISPLAY TECH (XIAMEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of the curved liquid crystal display, when the light-transmitting component is bent into a curved surface, such as figure 2 As shown, the positions of the light-shielding regions 3 and 4 on the optical path change, so that the light-transmitting regions 1 and 2 are partially blocked by the light-shielding regions 3 and 4. This change causes the light transmittance of the curved liquid crystal panel to decrease, and the penetration If there is no suitable backlight compensation measure, after the light emitted by the backlight module penetrates the LCD panel, the overall brightness of the screen will be uneven, which will affect the display effect.

Method used

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  • A curved liquid crystal display device
  • A curved liquid crystal display device
  • A curved liquid crystal display device

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Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1: The curved TV of the present invention divides each point of the backlight module into blocks, and takes the average ratio of the liquid crystal panel transmittance corresponding to each block area to calculate the backlight compensation as an example. The points of the backlight module described above Brightness meets: Y BLU =δ×Y BLU_C × T c % / T%.

[0048] The comparison of the liquid crystal display device, the brightness of the backlight module and the light transmittance of the liquid crystal panel of the embodiment 1 of the present invention with the flat panel TV and the backlight uncompensated curved TV is shown in the following table:

[0049]

[0050] As shown in the above table, the output brightness of the curved TV liquid crystal display device without backlight compensation is as follows: Figure 4 As shown, there are uneven spots on both sides, and the curved surface TV of embodiment 1 is compensated by backlight, and the output brightn...

Embodiment 2

[0057] Embodiment 2: The implementation of backlight compensation based on the difference in driving current of a curved TV in the present invention is taken as an example.

[0058] When the present invention performs backlight compensation, the brightness of each point of the light source module can be used to compensate the decrease of the transmittance of the curved liquid crystal panel. The implementation method is to use different driving currents for corresponding light sources in different regions of the backlight module. That is, the drive current of the light source at the lower transmittance of the liquid crystal panel is higher, and the drive current at the higher transmittance of the liquid crystal panel is lower, so that the brightness of the light source changes to perform backlight compensation. Such as Figure 7 As shown in the figure, the transmittance is T%, and the light source is LED. The entire backlight LED has two driving currents, the driving current ...

Embodiment 3

[0065] Embodiment 3: The curved TV of the present invention designs the light source distribution density to perform backlight compensation as an example.

[0066] The backlight compensation of the present invention can be realized by light sources with different distribution densities of corresponding light sources in different regions of the backlight module. That is, the distribution density of the light source at the lower transmittance of the liquid crystal panel is higher, making the backlight brightness stronger at the lower transmittance of the liquid crystal panel, and the lower the distribution density of the light source at the higher transmittance of the liquid crystal panel, making the light transmittance high The brightness of the backlight at the position is weak, so as to realize the backlight compensation. The light source uses LEDs, such as Figure 8 As shown, the LEDs of the backlight module have two distribution densities, the distribution density of LED l...

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Abstract

The invention discloses a curved surface backlight module and a display device thereof. The curved surface liquid crystal display device comprises a backlight module and a liquid crystal panel. The liquid crystal panel is on a side of the light-out surface of the backlight module. The device is characterized in that the backlight module and the liquid crystal panel are curved surfaces, relative position deviation occurs to an upper layer glass and a lower layer glass of the curved surface liquid crystal panel, penetration rate of each point of the liquid crystal panel changes, and the brightness of each point of the backlight module is corresponding to the penetration rate of each point of the liquid crystal panel. The points of the liquid crystal panel with low penetration rate are corresponding to points of the backlight module in high brightness, and the points of the liquid crystal panel with high penetration rate are corresponding to points of the backlight module in low brightness. Backlight compensation of the device can be realized through changing drive current, and can also be realized through changing light source distribution, ways are flexible, and different schemes can be used according to actual requirements of products.

Description

technical field [0001] The invention relates to a display device, in particular to a curved liquid crystal display device. Background technique [0002] At present, liquid crystal displays are mainly flat display screens. The liquid crystal module used is usually provided by a white light backlight module to provide uniform system brightness, and then obtain rich color display through the liquid crystal panel. The display technology that is better than the flat liquid crystal display is the curved liquid crystal display. The liquid crystal panel is concave in the viewing direction of the human eye and is curved, which makes the viewing experience more outstanding. [0003] The curved liquid crystal display is the same as the flat liquid crystal display, and its liquid crystal panel is also made of the upper and lower layers of the light-transmitting component CF and the light-transmitting component TFT. Components are in a flat state, such as figure 1 As shown, the light-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02F1/1333
CPCG02F1/1333G02F1/133611G02F2201/56G02F1/133613
Inventor 李丽梅林博瑛
Owner TPV DISPLAY TECH (XIAMEN) CO LTD
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