CN113267936B - Electronic terminal - Google Patents
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- CN113267936B CN113267936B CN202110533330.7A CN202110533330A CN113267936B CN 113267936 B CN113267936 B CN 113267936B CN 202110533330 A CN202110533330 A CN 202110533330A CN 113267936 B CN113267936 B CN 113267936B
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- light
- guide plate
- light guide
- diffusion
- light source
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of display, and discloses an electronic terminal, which comprises: the light emitting assembly comprises a plurality of light sources distributed along the light incident side of the light guide plate, and the light emergent direction of each light source faces to the light incident side of the light guide plate; the light diffusion component is arranged between the light inlet side of the light guide plate and the light source and is used for diffusing the light emitted by the light source; and the reflecting surface of the electronic paper display screen module faces to the light emergent side of the light guide plate, and light emitted by the light guide plate is reflected to the eyes of a reader through the reflecting surface of the electronic paper display module. In the electronic terminal, the light diffusion part is arranged between the light incident side of the light guide plate and the light emitting assembly, the divergence degree of the light beam and the light diffusion part after diffusion is larger, and the light mixing of the light beams of the adjacent light sources can be realized only in a shorter optical path, so that the electronic terminal can narrow the bottom frame, and the screen occupation ratio is reduced.
Description
The present application claims priority of chinese patent application having application number 202110007828.X and application name of "a super narrow bezel reflective screen module" filed by chinese patent office on 2021, 01/05, which is incorporated herein by reference in its entirety.
Technical Field
The invention relates to the technical field of display, in particular to an electronic terminal.
Background
At present, the peripheral frame of the electronic terminal of the reflective screen module in the market is wider, especially the bottom frame (chin) is wider, so that the screen occupation ratio is low. The main reason for the low screen occupation ratio is that the distance of the light mixing area of the front light of the reflective module is long, namely the light mixing optical path from the light outlet of the front light LED lamp to the AA area of the ink screen is large.
The principle that the light mixing area is long in distance can be specifically referred to fig. 1, a plurality of LED lamps M are distributed at intervals on the light incident side of the light guide plate S, light beams emitted by each LED lamp are incident into the light guide plate S, the light beams emitted by each LED lamp are all in a diffusion type, and a certain interval is reserved between adjacent LED lamps, so that the light beams need to be mixed together in the light mixing area S1 after entering the light guide plate S, and then enter the light equalizing area S2, the light equalizing area S2 is used for providing front light for a display screen, and a user visible display area S3 is arranged in the light equalizing area S2. Due to the existence of the light mixing area S1, the bottom frame is too wide, the proportion of the light homogenizing area S2 is small, the user visible display area S3 is small, and the screen proportion is low.
Aiming at the problems that the optical path of front light of equipment used by the existing reflection type screen module is long and the occupation ratio of the whole screen is low, the electronic terminal manufacturer of the reflection type screen module mostly adopts the design of increasing the number of mixed light LED lamps and improving the dot density of a light guide film for narrowing the chin so as to make up the design defect caused by the shortened optical path of the front light, and the whole screen module has limitation in design.
Disclosure of Invention
The invention discloses an electronic terminal which is used for solving the technical problem of low screen occupation ratio.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, an electronic terminal is provided, which includes: the light source comprises a light guide plate and a light emitting assembly, wherein the light emitting assembly comprises a plurality of light sources distributed along the light incident side of the light guide plate, and the light emergent direction of each light source faces to the light incident side of the light guide plate; the light beam and light diffusion part is arranged between the light inlet side of the light guide plate and the light source and is used for diffusing the light emitted by the light source, the divergence degree of the light beam and light diffusion part is larger after the light beam and light diffusion part is diffused, the light mixing of the light beams of the adjacent light sources can be realized only in a shorter optical path, and the electronic terminal adopting the electronic terminal can narrow the bottom frame, so that the screen occupation ratio is reduced; the electronic paper display screen module is characterized in that the reflection surface of the electronic paper display screen module faces the light emergent side of the light guide plate, and light emitted by the light guide plate is reflected to the eyes of a reader through the reflection surface of the electronic paper display module, so that the reader can clearly see the display content.
Optionally, the light diffusion member comprises a mixture of polycarbonate and a diffusing powder.
Optionally, the diffusion powder is uniformly dispersed in the polycarbonate.
Optionally, the weight ratio of the diffusing powder to the polycarbonate is between 0.1% and 10%.
Optionally, the material of the diffusion powder is carbon dioxide, silicon dioxide, or a mixture of carbon dioxide and silicon dioxide.
Optionally, the light emitting assembly includes a flexible circuit board, each of the light sources is electrically connected to the flexible circuit board, the flexible circuit board covers the light diffusion member, and the light diffusion member is bonded.
Alternatively, the light diffusion member is press-fitted to the light guide plate and the light source, respectively.
Optionally, the light source is an LED lamp bead or a micro LED lamp bar.
Optionally, an optical adhesive is further filled between each light source and the light guide plate.
Drawings
FIG. 1 is a schematic diagram of a conventional reflective screen module electronic terminal in which LED lamp beads are matched with a light guide plate;
fig. 2 is a schematic diagram of an electronic terminal provided in an embodiment of the present application;
fig. 3 is a longitudinal sectional view illustrating a partial structure of an electronic terminal according to an embodiment of the present disclosure;
fig. 4 shows a schematic view of a distribution of dots of a light guide plate in an electronic terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring specifically to fig. 3, the electronic terminal includes: an electronic paper display module 5 and a front light module.
Referring to fig. 2 and 3, the front light module includes: the light source 12 may be an LED lamp bead, or other light source with a light emitting function, such as a micro LED lamp bar, and the light emitting direction of each light source 12 faces the light incident side of the light guide plate 4, and the light guide plate 4 may be made of PMMA (polymethyl methacrylate) or other transparent material with a light guiding function; light diffusion part 10, light diffusion part 10 sets up between the income light side of light guide plate 4 and light source 12, and be used for diffusing the light that light source 12 launches, the plane of reflection of electron paper display module 5 is towards the light-emitting side of light guide plate 4, the light that light guide plate 4 jetted out is in the reflection of the plane of reflection of electron paper display module 5 to the eyes of reader, so that the reader can see the display content clearly.
In the above-described electronic terminal, since the light diffusion member 10 is provided between the light incident side of the light guide plate 4 and the light emitting element P, the light beam is diffused by the light diffusion member 10, and the light beam is diffused to a greater extent, and the light mixing of the light beams of the adjacent light sources 12 can be realized only in a short optical path, so that the electronic terminal can narrow the bottom frame, thereby reducing the screen occupation ratio.
In fig. 3, a lower film (film) layer 3, an upper film (film) layer 2 and a protective cover plate 1 are sequentially arranged on a light emitting side of a light guide plate 4 in a front light module, a first optical adhesive layer 9 is filled between the light guide plate 4 and the lower film (film) layer 3, a second optical adhesive layer 8 is filled between the lower film (film) layer 3 and the upper film (film) layer 2, a third optical adhesive layer 7 is filled between the upper film (film) layer 2 and the protective cover plate 1, and an ink layer 6 is coated on the bottom side of the edge of the protective cover plate 1; and an electronic paper display module (EPD module) 5 is arranged on one side of the light guide plate 4, which is far away from the protective cover plate 1.
With particular reference to fig. 3, the light emitting assembly P further comprises a flexible circuit board 11; each light source 12 is electrically connected to the flexible circuit board 11, and the flexible circuit board 11 is connected to the light guide plate 4, which may be connected by bonding. In the specific assembly, the flexible circuit board 11 is firstly attached to the light diffusion member 10, the light diffusion member 10 comprises mixed polycarbonate and diffusion powder, and the diffusion powder can be mixed in the process of injection molding to form a polycarbonate bonding material; then, placing the light diffusion component 10 on the light incident side of the light guide plate 4, so that the light diffusion component 10 is distributed between the light source 12 and the light guide plate 4, and in order to ensure that the light beam is uniformly diffused in the light diffusion component 10, the diffusion powder can be uniformly distributed in the polycarbonate, wherein the diffusion powder can adopt carbon dioxide, silicon dioxide or a mixture of carbon dioxide and silicon dioxide, the weight ratio of the diffusion powder and the polycarbonate is between 0.1% and 10%, for example, 0.1%, 1%, 3%, 4%, 5%, 7% and 10%, etc., when the weight ratio is less than 0.1%, the light diffusion effect cannot be substantial, and when the weight ratio is more than 10%, the light diffusion is excessive; in the above-described interval, the higher the concentration of the diffusing powder, the lower the light transmittance of the light-diffusing member 10; because the polycarbonate provides the location for the diffusion powder, thereby making the diffusion powder disperse, and the dispersed diffusion powder can reduce the luminousness of light diffusion part 10, the light beam that light source 12 sent can be broken up when shuttling back and forth in light diffusion part 10, the holistic optical path has been enlarged, when the light beam worn out light diffusion part 10 and got into light guide plate 4, light has been more even, equivalent to reduced the even light degree of difficulty of light guide plate, and then shortened the distance that the light guide plate mixes the light, the required width of the bottom frame at electronic terminal narrows down, even light district proportion increases, be favorable to the area increase of user's visible display area P, effectively improve the screen occupation ratio.
The light diffusion part 10 can be respectively pressed with the light guide plate 4 and the light source 12 without a gap, so that light beams emitted by the light source 12 are diffused in the light diffusion part 10 all the time without passing through air, the light mixing distance is shortened, the light diffusion part 10 is fixed with the light source 12 and the light guide plate 4 respectively, the light source 12 and the light guide plate 4 are combined stably, the light source is not prone to shaking, and a stable light source can be provided. In addition, the light diffusion member 10 may be spaced apart from the light guide plate 4 and the light source 12 by a predetermined distance, and the light mixing area may be reduced to a certain extent, thereby reducing the screen ratio.
In one embodiment, the flexible circuit board 11 may also cover the light diffusion member 10 and be bonded to the light diffusion member 10, so that the light emitting assembly P as a whole can be tightly combined with the light diffusion member 10.
In one embodiment, an optical adhesive 13' is further filled between each light source 12 and the light guide plate 4, the optical adhesive 13' can combine the light source 12 and the light guide plate 4 more tightly, and in particular, the light diffusion member 10 can only occupy the upper space between the light source 12 and the light guide plate 4, and the lower space is filled with the optical adhesive 13'. Specifically, when the light guide plate 4 is attached to the electronic paper display module 5 (see the following embodiments), the optical adhesive between the light guide plate 4 and the electronic paper display module 5 may be squeezed into the lower space between the light source 12 and the light guide plate 4. Specifically, when the light guide plate 4 and the electronic paper display module 5 are bonded by the optical adhesive layer 13, a part of the material may be pressed between the light source 12 and the light guide plate 4 to form the optical adhesive 13'.
When the size of the light mixing area of the front light module is smaller than 6mm, the problem of a dark zone at the bottom can become a dominant problem, and by using the electronic terminal provided by the embodiment of the application, the size of the light mixing area can be within 5 mm.
Referring to fig. 4, the dots D manufactured after simulation are present on the light guide plate 4, and are more uniformly displayed to the user after passing through the dots D designed scientifically, wherein the distribution of the dots D is not as dense as up and down, for example, the distribution density of the dots D is reduced for an area with higher light intensity on the bottom incident side, the distribution density of the dots D is reduced for an area with light leakage, and the distribution density of the dots D is increased for an area with weak light intensity, so that the light output of the light guide plate 4 is uniform everywhere.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. An electronic terminal, comprising:
the light source comprises a light guide plate and a light emitting assembly, wherein the light emitting assembly comprises a plurality of light sources distributed along the light incident side of the light guide plate, and the light emergent direction of each light source faces to the light incident side of the light guide plate;
the light diffusion component is arranged between the light inlet side of the light guide plate and the light source and is used for diffusing the light emitted by the light source;
the reflection surface of the electronic paper display screen module faces to the light emergent side of the light guide plate;
the light-emitting assembly comprises a flexible circuit board, the flexible circuit board is connected with the light guide plate, each light source is electrically connected with the flexible circuit board, the light diffusion part is respectively connected with the light guide plate and the light source in a pressing mode, and the flexible circuit board covers the light diffusion part and is bonded with the light diffusion part;
the light guide plate is made of PMMA, and the light diffusion component comprises mixed polycarbonate and diffusion powder; the weight ratio of the diffusion powder to the polycarbonate is between 4% and 10%; the material of the diffusion powder is carbon dioxide and silicon dioxide or a mixture of the carbon dioxide and the silicon dioxide.
2. The electronic terminal according to claim 1, wherein the diffusion powder is uniformly dispersed in the polycarbonate.
3. The electronic terminal of claim 1, wherein the light source is an LED lamp bead or a micro LED lamp bar.
4. An electronic terminal according to claim 1, wherein an optical glue is further filled between each light source and the light guide plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007828 | 2021-01-05 | ||
| CN202110007828X | 2021-01-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113267936A CN113267936A (en) | 2021-08-17 |
| CN113267936B true CN113267936B (en) | 2022-12-27 |
Family
ID=77231170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110533330.7A Active CN113267936B (en) | 2021-01-05 | 2021-05-17 | Electronic terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113267936B (en) |
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| CN101363937A (en) * | 2007-08-08 | 2009-02-11 | 西铁城电子股份有限公司 | Lightguide plate, planar light unit and display apparatus |
| CN101440919A (en) * | 2008-12-18 | 2009-05-27 | 上海广电光电子有限公司 | Side input type backlight module unit |
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| Publication number | Publication date |
|---|---|
| CN113267936A (en) | 2021-08-17 |
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |