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display device

A technology of display device and liquid crystal display device, which is applied to static indicators, nonlinear optics, instruments, etc., can solve the problem of uneven color of pictures, and achieve the effect of reducing uneven color

Inactive Publication Date: 2011-12-07
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even in such a seamless liquid crystal display device, color unevenness sometimes occurs on the screen.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0042] Figure 1A is a schematic diagram showing a liquid crystal display device according to Embodiment 1 of the present invention, Figure 1B It is a cross-sectional view showing the liquid crystal display device according to Embodiment 1 of the present invention. Such as Figure 1A As shown, the liquid crystal display device 100 according to Embodiment 1 includes: a liquid crystal panel 110 as a display unit; a seamless lens 200 provided on the front surface of the liquid crystal panel 110; and a backlight (not shown) as an illuminating device. The transmitted light necessary for image display by the liquid crystal panel 110 is irradiated. Here, if Figure 1B As shown, the edge of the seamless lens provided on the front surface of the display surface of the liquid crystal panel forms a curved surface to form a curved portion 200a. The curved portion 200 a of the seamless lens is disposed on the frame 200 b of the liquid crystal panel 110 . Thereby, an image is displaye...

Embodiment approach 2

[0063] Figure 5 It is a block diagram showing the overall configuration of the liquid crystal display device 100 of the second embodiment. In addition, compared with Embodiment 1, the configuration is different in that the functions of the video signal processing circuit 120 and the RGB grayscale table 122 for independently correcting the grayscales of RGB are provided.

[0064] The video signal processing circuit 120 refers to the RGB grayscale table 122 to read the grayscale signal of each pixel on the liquid crystal panel 110 obtained from the video signal corresponding to the curved portion of the seamless lens covering the frame of the display surface. The correction value of the level, converts the input gray level to the output gray level independently by RGB.

[0065] For example, if Image 6 As shown, the RGB grayscale table 122 stores the output RGB grayscale corresponding to the input RGB grayscale of the video signal, which is preset according to each horizontal...

Embodiment approach 3

[0072] Figure 8It is a schematic block diagram showing the overall configuration of the liquid crystal display device 100 according to the third embodiment. In addition, the difference in configuration from Embodiments 1 and 2 is the function of the video signal processing circuit 120 . Since the video is expanded by the seamless lens, it is necessary to compress the video in order to display the same video as the input image. Such as Figure 9 In that case, since the video seen by the viewer is expanded by (A+B) / A times, correction is required to compress the image of the curved portion of the seamless lens by A / (A+B) times. The video signal processing circuit 120 compresses the image represented by each pixel obtained from the video signal corresponding to the curved portion of the seamless lens covering the frame of the display surface by thinning out horizontal lines. However, when the image of the lens part is compressed, the image size becomes smaller, so it is neces...

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PUM

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Abstract

Provided is a display device capable of reducing color unevenness caused by viewing angle characteristics of a curved portion of a seamless lens. The display device is provided with a seamless lens on the front surface of the display surface, and is equipped with: a video signal input part, which inputs a video signal; Among the images, the display image corresponding to the curved portion of the seamless lens is subjected to image conversion.

Description

technical field [0001] The present invention relates to a display device, and more particularly to a display device provided with a seamless lens. Background technique [0002] In recent years, for example, liquid crystal display devices have been widely used in liquid crystal televisions, monitors, mobile phones, and the like as flat panel displays that are thinner and lighter than conventional Braun tubes. A plurality of liquid crystal panels are used in such a liquid crystal display device. In addition, in a liquid crystal display device, a voltage signal corresponding to a grayscale value to be displayed is supplied to a plurality of pixels, thereby performing a display operation, and displaying is performed on the display surface of the liquid crystal panel. [0003] However, in the liquid crystal display device, the display luminance on the screen becomes darker or brighter locally than the desired luminance, which may cause unevenness on the screen. Such unevenness ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G02F1/1335G09G3/20
CPCG09G2320/0271G02F1/133526G09G2320/0285G09G2320/0242G09G2320/0233G09G2300/026G09G3/36
Inventor 广兼正浩
Owner SHARP KK