CN219642059U

CN219642059U - Full-lamination front light guide structure

Info

Publication number: CN219642059U
Application number: CN202320375359.1U
Authority: CN
Inventors: 李飞; 李琳; 陈雪莲; 林金锡; 林金汉
Original assignee: Changzhou Almaden Co Ltd
Current assignee: Changzhou Almaden Co Ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-09-05
Anticipated expiration: 2033-03-02

Abstract

The utility model belongs to the technical field of front-mounted light-guiding displays, and particularly relates to a full-attached front-mounted light-guiding structure which comprises a TFT substrate, electronic paper and a glass light-guiding plate which are sequentially arranged, wherein an LED light source is arranged on the side of the glass light-guiding plate, light-guiding net points are arranged on one surface of the glass light-guiding plate, which is close to the electronic paper, the glass light-guiding plate is fully attached to the electronic paper through OCA optical cement, and red and green quantum dot particles are dispersed in the OCA optical cement. After the red-green quantum dot particles absorb redundant blue light near the light-entering side of the LED light source, the proportion of the blue light at the light-entering side is reduced, the proportion of red-green light is improved, and the original blue light color is converted into white light; the red-green quantum dot particles absorb redundant blue light and green light on the light emitting side far away from the LED light source, so that the proportion of the blue-green light on the light emitting side is reduced, the proportion of the red light is improved, the original light color which is greenish is converted into white light, and the problems that the light emitting side of the front light guide structure of the electronic book emits blue light and the light emitting side emits green light are effectively solved.

Description

Full-lamination front light guide structure

Technical Field

The utility model belongs to the technical field of front light-guiding displays, and particularly relates to a full-fitting front light-guiding structure.

Background

The electronic book generally refers to a palm reader, and the characteristics of portability, easy use and large capacity of the electronic book are very suitable for modern life, digital copyright trade and development of internet technology, so that a user of the electronic book can conveniently purchase more books at lower price, the electronic book is favored by more users, and the user has higher requirements on the appearance and quality of the electronic book. The front-mounted light guide structure of the existing electronic book utilizes the structure of the front-mounted glass light guide plate and the TFT panel in full lamination, so that the stability and the service life of the structure can be effectively improved, and meanwhile, the edge fixing frame can be omitted, so that the appearance of a product is more attractive.

The OCA optical adhesive has high light transmittance and transparency, excellent flatness and ageing resistance, is the most commonly used solid optical adhesive in a fully attached backlight display, has a refractive index of about 1.45, a light transmittance of more than 90%, a low refractive index and high light transmittance, has a refractive index of about 1.38, and has a light transmittance of more than 94%, and the application of the high light transmittance OCA to a glass light guide plate product can not affect the light emitting effect of the glass light guide plate, but the low refractive substance added in the high light transmittance OCA can greatly improve the light transmittance of blue light, and the glass light guide plate is matched with the low light transmittance to easily cause blue light emission on the light inlet side close to a light source, and the glass light guide plate contains ferrous iron to make the light emitting side far away from the light source emit green.

Disclosure of Invention

In order to solve the problems that the light incident side of the electronic book close to the light source emits blue and the light emergent side of the light source emits green in the prior art, the utility model provides a full-fit front light guide structure.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the full-lamination front light guide structure comprises a TFT substrate, electronic paper and a glass light guide plate which are sequentially arranged, wherein an LED light source is arranged on the side of the glass light guide plate, a light guide screen point is arranged on one surface, close to the electronic paper, of the glass light guide plate, the glass light guide plate is fully laminated with the electronic paper through OCA optical cement, and red and green quantum dot particles are dispersed in the OCA optical cement.

Preferably, the thickness of the OCA optical adhesive is 100um-300um. The OCA optical cement is thinner, and meanwhile, the glass light guide plate and the electronic paper are guaranteed to be fully and firmly attached.

Further, the thickness of the OCA optical cement is 200um. The OCA optical cement is thinner, and meanwhile, the glass light guide plate and the electronic paper are guaranteed to be fully and firmly attached.

Preferably, the diameter of the light guide mesh point is less than or equal to 0.04mm. The light guide net points with small diameters ensure that the light emitted by the fully-attached front light guide structure is uniform and fine.

Preferably, the LED light source is a white LED light source. Is helpful for achieving the eye protection effect.

The beneficial effects are that: according to the full-lamination front light guide structure, light of the LED light source sequentially passes through the glass light guide plate and the light guide mesh points and penetrates through the OCA optical adhesive, then is reflected by the electronic paper, and sequentially passes through the OCA optical adhesive and the glass light guide plate to emit light, wherein red and green quantum dot particles are dispersed in the OCA optical adhesive, and after the red and green quantum dot particles absorb redundant blue light near the light inlet side of the LED light source, the red and green light is emitted, so that the proportion of the blue light at the light inlet side is reduced, the proportion of the red and green light is improved, and the original blue color is converted into white light; the red-green quantum dot particles absorb redundant blue light and green light far away from the light emitting side of the LED light source, emit red-green light, reduce the proportion of the blue-green light on the light emitting side, promote the proportion of red light, convert the original greenish light color into white light, and effectively solve the problem that the front light guide structure of the electronic book, which is close to the light emitting side of the light source, emits blue light and is far away from the light emitting side of the light source, emits green light after neutralization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a fully conformable front light guide structure of the present utility model;

in the figure: 1. the LED light source comprises a TFT substrate, 2, electronic paper, 3, a glass light guide plate, 31, light guide mesh points, 4, an LED light source, 5, OCA optical cement and 6, red and green quantum dot particles.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1, a full-lamination front-mounted light guide structure comprises a TFT substrate 1, electronic paper 2 and a glass light guide plate 3 which are sequentially arranged, wherein an LED light source 4 is arranged on the side of the glass light guide plate 3, the LED light source 4 in this embodiment is a white LED light source, a light guide lattice point 31 is arranged on one surface, close to the electronic paper 2, of the glass light guide plate 3, the glass light guide plate 3 is fully laminated with the electronic paper 2 through an OCA optical cement 5, and red and green quantum dot particles 6 are dispersed in the OCA optical cement 5.

In order to ensure that the glass light guide plate 3 is firmly attached to the electronic paper 2 while the OCA optical adhesive 5 is thinner, in this embodiment, the thickness of the OCA optical adhesive 5 is 100um to 300um, and specifically, the thickness of the OCA optical adhesive 5 is 200um.

In order to ensure that the light emitted by the fully-attached front light guide structure is uniform and fine, in this embodiment, the diameter of the light guide dots 31 is less than or equal to 0.04mm, i.e., the light guide dots 31 with small diameters are provided.

The working principle is as follows:

the light of the LED light source 4 sequentially passes through the glass light guide plate 3 and the light guide lattice point 31 and penetrates through the OCA optical cement 5, then is reflected by the electronic paper 2, and then sequentially passes through the OCA optical cement 5 and the glass light guide plate 3 to emit light, wherein the red and green quantum dot particles 6 are dispersed in the OCA optical cement 5, and the red and green quantum dot particles 6 emit red and green light after absorbing redundant blue light near the light inlet side of the LED light source 4, so that the proportion of blue light at the light inlet side is reduced, the proportion of red and green light is improved, and the original blue light color is converted into white light; the red-green quantum dot particles 6 absorb redundant blue light and green light far away from the light emitting side of the LED light source 4, emit red-green light, reduce the proportion of the blue-green light on the light emitting side, promote the proportion of the red light, convert the original greenish light color into white light, and effectively solve the problem that the front light guide structure of the electronic book, which is close to the light emitting side of the light source, emits blue light and is far away from the light emitting side of the light source, emits green light after neutralization.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims

1. The utility model provides a leading light guide structure of full laminating which characterized in that: including TFT base plate (1), electron paper (2) and glass light guide plate (3) that set gradually, the side of glass light guide plate (3) is provided with LED light source (4), one side that glass light guide plate (3) are close to electron paper (2) is provided with light guide screen dot (31), glass light guide plate (3) are through OCA optical cement (5) and electron paper (2) laminating entirely, disperse in OCA optical cement (5) has red green quantum dot granule (6).

2. The fully-laminated front light guide structure according to claim 1, wherein: the thickness of the OCA optical adhesive (5) is 100-300 um.

3. The fully-laminated front light guide structure according to claim 2, wherein: the thickness of the OCA optical adhesive (5) is 200um.

4. The fully-laminated front light guide structure according to claim 1, wherein: the diameter of the light guide mesh point (31) is less than or equal to 0.04mm.

5. The fully-laminated front light guide structure of claim 1, 2, 3 or 4, wherein: the LED light source (4) is a white LED light source.