Area light source device and flat panel display device
A surface light source and light guide technology, which is applied in the direction of plane/plate light guide, light guide, optics, etc., can solve the problem of low contrast of the front light source, and achieve the effect of improving the visual effect and increasing the contrast
Active Publication Date: 2021-07-23
苏州晶智铱锘光电科技有限公司
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Problems solved by technology
[0005] The object of the present invention is to provide a surface light source device and a liquid crystal display device to solve the problem of low contrast of the front light source in the prior art
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[0036] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
[0037] to combine figure 1 As shown, the embodiment of the present application provides a surface light source device 10 , including a light guide 11 and a luminous body 12 for sending light to the light guide 11 . It also includes a first dielectric layer 13 , a structural layer 14 and a second dielectric layer 15 sequentially arranged on one side of the light-emitting surface of the light guide body 11 , and the second dielectric layer is covered in the structural layer 14 . The structure layer is used to change the direction of the light emitted by the light guide body to the structure layer, and emit it in a direct...
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Abstract
The invention discloses an area light source device which comprises: a light guide body which comprises an incident plane, a front emergent plane and a rear emergent plane, wherein the front emergent plane and the rear emergent plane extend from the two opposite sides of the incident plane respectively; a light emitting body provided along the incident surface side of the light guide body; a structural layer which is arranged on the side of the rear emergent surface and is used for changing the direction of light emitted to the structural layer by the light guide body and emitting the light in the direction far away from the rear emergent surface; and a second dielectric layer which is wrapped by the structural layer, wherein the refractive index of the material of the second dielectric layer is smaller than that of the material of the structural layer. The invention further discloses a panel display device. The second dielectric layer is coated in the structural layer with a certain refractive index, and a refractive index matching structural scheme is provided, so that the contrast ratio can be remarkably improved, and the visual effect of an existing front light source is improved.
Description
technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a surface light source device and a flat panel display device, in particular to a liquid crystal reflective or transmissive display device. Background technique [0002] At present, low power consumption display becomes a trend, so reflective liquid crystal display and transmissive display emerge as the times require. This type of display not only has lower power consumption, but also has the advantages of being thinner, lighter, and smaller; but they have a disadvantage that in a darker environment, the display brightness will be reduced, which will affect the viewing experience. In order to solve this problem, a front light is usually added to the module. Due to the particularity of the use scene, the front light source needs to have high transparency and a certain contrast, so that users can see a clear and bright picture. [0003] The structure of...
Claims
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IPC IPC(8): G02F1/13357G02B6/00
CPCG02F1/1336G02B6/005G02B6/0055G02B6/0011G02B6/0065G02B6/0073
Inventor 陈怡敏武鹏李同周淑金
Owner 苏州晶智铱锘光电科技有限公司