Optical seamless splicing device for liquid crystal screen
A technology of seamless splicing, LCD screen, applied in the direction of identification devices, instruments, etc., can solve the problems of image distortion, image misalignment, viewing angle sensitivity, etc.
Active Publication Date: 2014-10-29
BEIJING UNIVERSAL LANBO TECH CO LTD
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Problems solved by technology
The disadvantage is that it is very sensitive to the viewing angle, mainly because the image distortion is serious when viewed in an oblique direction, and even image misalignment occurs.
Due to the edge banding of the LCD, it is theoretically impossible to eliminate it through the improvement of the manufacturing process. At the same time, the driving connection line of the LCD is on the side of the screen, which will also cause a certain thickness of the frame.
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[0025] Such as Figure 1-7 As shown, a liquid crystal screen optical seamless splicing device is composed of a metal substrate 1, an LED pixel array 2, a flexible circuit board 3, a scattering cover and a protective frame 5; the metal substrate 1 is directly attached to the liquid crystal screen The frame 6 has an L-shaped bend, and small holes are punched on the L-shaped bend for fixing the scattering cover 4; the LED pixel array 2 is welded on the flexible circuit board 3, and the flexible circuit board 3 is closely attached in an L-shape On the metal substrate 1, the other end of the flexible circuit board 3 is connected to the LED driver circuit board; the diffuser cover is formed by injection molding of translucent PC material, covers the LED pixel array 2, and is fixed with the metal substrate 1 through the small hole on the edge; finally The outer protective frame 5 is used to fix and protect the flexible circuit board 3 .
[0026] When the size of the LED pixel light ...
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The invention relates to an optical seamless splicing device for a liquid crystal screen. The optical seamless splicing device is composed of a metal bottom liner, an LED pixel array, a flexible circuit board, a scattering cover and a protection outer frame. The metal bottom liner is directly and closely attached to a frame of the liquid crystal screen and is provided with an L-shaped bending part punched with small holes used for fixing the scattering cover. The LED pixel array is welded to the flexible circuit board, the flexible circuit board is closely attached to the metal bottom liner in an L-shaped mode, and the other end of the flexible circuit board is connected with an LED driving circuit board. The scattering cover is formed by semi-transparent PC materials in an injection molding mode, the LED pixel array is covered with the scattering cover, and the scattering cover and the metal bottom liner are fixed through the small holes in the edge. The outermost protection outer frame is used for fixing and protecting the flexible circuit board. The sizes of liquid crystal pixels of the liquid crystal screen are determined according to the period of the LED pixel array on the flexible circuit board. The optical seamless splicing device solves the problem of image distortion in passive compensation, and serious image deformation, dislocation and other problems caused by observing angle change cannot be caused on image displaying.
Description
technical field [0001] The invention relates to a video image display device, in particular to a liquid crystal screen optical seamless splicing device. Background technique [0002] The existing seamless splicing technology is mainly to add an optical refraction or reflection device in front of the screen to enlarge or reflect the image at the edge to cover the seam. The disadvantage is that it is very sensitive to the viewing angle, mainly because the image distortion is serious when viewed in an oblique direction, and even image misalignment occurs. Due to the edge banding of the liquid crystal, it is theoretically impossible to eliminate it through the improvement of the manufacturing process. At the same time, the driving connection line of the liquid crystal is located on the side of the screen, which will also cause a certain thickness of the frame. Therefore, when splicing multiple screens, splicing gaps (that is, gaps between images) will inevitably appear. At pre...
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Inventor 胡頔迪
Owner BEIJING UNIVERSAL LANBO TECH CO LTD