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Liquid crystal display device

A technology of liquid crystal display device and liquid crystal display panel, which is applied to static indicators, nonlinear optics, instruments, etc., can solve problems such as complicated operation, and achieve the effect of suppressing chromaticity deviation

Inactive Publication Date: 2010-08-04
HITACHI DISPLAYS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in this case, for example, it is necessary to perform the above-mentioned correction while detecting the light from the backlight passing through the liquid crystal display panel, so the operation is complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] figure 2 It is a schematic diagram showing Example 1 of the liquid crystal display device of the present invention, and shows a plan view in a disassembled state of the liquid crystal display device.

[0064] exist figure 2 In the figure, the liquid crystal display device is configured by arranging a liquid crystal display panel PNL, an optical sheet OS, and a backlight BL from the viewer side (the paper surface).

[0065] The liquid crystal display panel PNL is configured by encapsulating substrates SUB1 and SUB2 which are opposed to each other with liquid crystal interposed therebetween, and incorporates an image display section AR including a plurality of pixels. In addition, liquid crystal is sealed between the substrates SUB1 and SUB2 by the sealing material SL formed to surround the image display portion AR, and fastening between the substrates SUB1 and SUB2 is achieved.

[0066] Although not shown in the figure, the image display unit AR is composed of a plural...

Embodiment 2

[0084] In the above-mentioned embodiment, in the information RD representing the level of whiteness tolerance of the light source LS of the backlight BL such as figure 1 In the embodiment shown in (c) stored in a storage device composed of a semiconductor device, the information RD stored in the storage device is read by a person, and the person adjusts the gamma of the image signal input to the liquid crystal display panel PNL based on the information RD. Ma characteristics are corrected.

[0085] However, the storage device may be electrically connected to the image quality processing circuit QMC for correcting the gamma characteristic of the image signal, and the gamma characteristic of the image signal may be automatically corrected based on the information RD stored in the storage device. . In this case, since there is no need for human beings to read the information RD stored in the above-mentioned storage device, it is not necessary to figure 1 As shown in (c), it mus...

Embodiment 3

[0087] In the above example, if Figure 4As shown, in the state where the flexible circuit board FPC is connected to the connector CNT, the information RD indicating the level of whiteness tolerance of the light source LS of the backlight BL is expressly displayed on the visible surface of the flexible circuit board FPC. However, such explicit indication may be made on the surface opposite to the above-mentioned surface of the flexible circuit board FPC, for example, the surface corresponding to the front and back. This is because the displayed information can be confirmed before the flexible circuit board FPC is connected to the connector CNT.

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Abstract

There is provided a liquid crystal display device that can easily suppress color variation, even if there is a difference in white tolerance of the backlight. The liquid crystal display device includes a liquid crystal display panel to which an image signal is input, and a backlight provided on one side of the liquid crystal display panel, using a light emitting diode as a light source of the backlight. Information about the white tolerance of the light source using the light emitting diode, which indicates one rank of plural ranks assigned to the white tolerance, is clearly indicated in a portion of the backlight. The information is input to an image quality processing circuit in order to correct gamma characteristics of the image signal according to the information.

Description

technical field [0001] The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device comprising a liquid crystal display panel and a backlight disposed on one side of the liquid crystal display panel, wherein a light source of the backlight is composed of a light emitting diode. Background technique [0002] Since the liquid crystal display panel is formed to independently control the amount of light transmitted by each pixel, it is generally configured to include a backlight on the back of the liquid crystal display panel. [0003] As such a backlight, for example, a backlight including a light guide plate arranged to face a liquid crystal display panel and a light source arranged to face at least one side wall surface of the light guide plate is known. Such a backlight functions as a surface light source by allowing light from a light source to enter the side wall surface of the light guide plate, reflect it ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G09G3/34
CPCG09G2370/047G09G2360/145G02F1/133603G09G3/2092G02F1/133609G09G2320/08G09G2320/0242G09G3/3413G09G2320/0673G09G2320/0276
Inventor 原山武志高桥悠
Owner HITACHI DISPLAYS
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