CN116741054A - Front light module reflective display - Google Patents

Front light module reflective display Download PDF

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Publication number
CN116741054A
CN116741054A CN202310956095.3A CN202310956095A CN116741054A CN 116741054 A CN116741054 A CN 116741054A CN 202310956095 A CN202310956095 A CN 202310956095A CN 116741054 A CN116741054 A CN 116741054A
Authority
CN
China
Prior art keywords
light
reflective
cover plate
film layer
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310956095.3A
Other languages
Chinese (zh)
Inventor
王伯贤
陈炫仰
李凰齐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TPV Display Technology China Co Ltd
Original Assignee
TPV Display Technology China Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TPV Display Technology China Co Ltd filed Critical TPV Display Technology China Co Ltd
Priority to CN202310956095.3A priority Critical patent/CN116741054A/en
Publication of CN116741054A publication Critical patent/CN116741054A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133616—Front illuminating devices

Abstract

The invention relates to a front light module reflective display, which comprises a reflective panel, a front light module and a cover plate, wherein the reflective panel, the front light module and the cover plate are sequentially laminated and bonded by optical glue; the frame decoration region ink layer of the cover plate is arranged above the cover plate base material, a light reflection film layer is arranged between the cover plate base material and the frame decoration region ink layer, and an optical filling layer is covered above the decoration ink. The invention can improve the visual interference of uneven display boundary of the light incidence surface, so that the reflection type display equipment carrying the front light module can have better display visual quality, and the phenomenon of uneven brightness of pictures is reduced or even solved.

Description

Front light module reflective display
Technical Field
The invention relates to the technical field of displays, in particular to a front light module reflective display.
Background
In the market of various consumer electronic books or electronic paper products, reflective display devices are mainly used to display images, and the display interface is irradiated by incident light from above to achieve the display purpose. The reflective display device can rely on an external light source in a bright place, but enters an environment with a weaker external light source, so that the reflective display device cannot clearly display pictures, and a front light module is arranged above a display panel of the reflective display device, so that when the external light source is insufficient, the display panel is provided with enough light sources, and a user can conveniently watch the pictures.
The product of the front light module reflective display device comprises a reflective display, a light guide plate, at least one light source and a protective cover plate containing a frame decoration area, wherein the light guide plate is attached to the reflective display and the protective cover plate containing the frame decoration area by utilizing optical cement, and the protective cover plate can be combined with a touch module. The light source is called a light incident surface towards the light guide plate, the surface of the light guide plate comprises a light emergent region and a side source region surrounding the light emergent region, the light source is used for irradiating the light guide plate, light is transmitted through the lattice point microstructure of the light guide plate, so that light is uniformly distributed on the light guide plate, the light can pass through a border decoration region and a border decoration region-free region, and the light passes through two different structural interfaces to cause inconsistent light reflection energy, so that the display region has uneven brightness and visual interference phenomenon, and especially the juncture of the non-display region and the display region is particularly obvious.
In the prior art, a front light module with uneven brightness and visual effect on the light incident side is improved by using a reflecting layer, wherein the reflecting layer and a frame modification layer are both constructed on the back surface of a cover plate substrate and are arranged between the cover plate substrate and a reflective display, so that optical cement with enough thickness is required to be used for compensating the thickness break difference of the reflecting layer and the modification layer, and the thickness of the whole module is increased. In addition, in order to improve the optical effect of the reflective layer, a composite multilayer structure is sometimes adopted, so that the overall thickness of the module is obviously increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a front light module reflective display which improves the visual perception of uneven brightness.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the front light module comprises a light guide plate and a light source, wherein the light guide plate is adhered between the reflective panel and the cover plate through optical adhesive, at least one side of the light guide plate is provided with a light incident surface, and at least one light source is arranged on the light incident surface; the frame decoration region ink layer of the cover plate is arranged above the cover plate base material, a light reflection film layer is arranged between the cover plate base material and the frame decoration region ink layer, and an optical filling layer is covered above the decoration ink.
Further, the invention also comprises a touch control module, wherein the touch control module is adhered between the cover plate and the light guide plate through optical cement; or the touch control film layer is not required to be attached to the cover plate through optical cement, but is directly constructed below the cover plate.
Further, the cover plate substrate is made of glass or plastic.
Further, the optical leveling layer forms an anti-glare function through an embossing mode, or microparticles are added into the optical leveling layer to form the anti-glare function, or an anti-glare film layer is formed above the optical leveling layer through a spraying mode; the haze of the anti-glare function is 1% -70%, and the roughness is 0.1 mu m-3 mu m.
Further, the optical leveling layer is formed by adopting one component of acrylic resin, epoxy resin, a mixture of acrylic resin and epoxy resin, polyester resin, polyamide resin, polyimide resin or siloxane-based compound through a thermal curing or photo-curing mode.
Furthermore, the reflective light film layer is covered with the frame decoration area or a local area at the light incident side, the reflectivity of the reflective light film layer is more than 10%, and the specular regular reflection light is eliminated by less than 30%.
Further, the reflective light film layer is formed by reflective materials of silver series, copper series, gold series or white series, or the reflective light film layer is a multilayer optical film coating structure.
Further, the reflective light film layer is formed by printing ink or photoresistance through thermal or ultraviolet light curing, and the reflective light film layer is doped with reflective metal or is added with nonmetallic substances with metal color and luster; while the white series of reflective materials are oxides or nitrides of doped titanium, silicon, aluminum.
Further, the reflective light film layer forms a reflective metal film on the frame decoration area or a local area on the light incident side in a plating or vacuum coating mode; or the reflective light film layer is formed by plating the oxide and nitride of doped titanium, silicon or aluminum on the frame decoration area or the local area on the light incident side in a vacuum coating mode so as to form a multilayer optical coating structure to achieve the purpose of reflecting light.
Furthermore, the reflective light film layer is formed by sticking an adhesive tape or a reflective patch which can generate a reflective effect on the upper side of the cover plate substrate.
By adopting the technical scheme, the invention has the beneficial effects that: .
1. The ideal optical collocation is realized by adopting a non-traditional structural concept, the frame decoration region ink layer of the cover plate is manufactured on the outer side of the base material, the light path is adjusted by adding the reflection light film layer between the frame decoration region ink layer and the base material of the cover plate, the reflection light film layer can prevent the light path from directly contacting the frame decoration region ink layer, the interference of the light outlet path of the light guide plate by the frame decoration region of the cover plate is reduced, the visual interference of uneven display boundary brightness of the light inlet surface is improved, the reflection display device carrying the front light module can have better visual quality of display, and the phenomenon of uneven brightness of pictures is reduced or even solved; in addition, an optical leveling layer is added above the frame decoration region ink layer, and the optical leveling layer can protect the frame decoration region ink layer and the reflective light film layer, so that normal touch feeling, writing feeling and optical parameters can be achieved;
2. the frame decoration region ink layer and the reflection light film layer are manufactured above the cover plate base material, so that the thickness of the optical adhesive is reduced or the number of layers of the film with the integral structure is reduced, the thickness increase of the front light display module can be avoided, and the product is easy to realize the thinning aim.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic cross-sectional view of embodiment 1 of the present invention;
FIG. 2 is a schematic cross-sectional view of embodiment 2 of the present invention;
FIG. 3 is a schematic cross-sectional view of embodiment 3 of the present invention.
Description of the embodiments
In embodiment 1, as shown in fig. 1, the front light module reflective display of the present invention includes a reflective panel 2, a front light module and a cover plate 3, which are sequentially laminated and bonded by an optical adhesive 1, where the front light module includes a light guide plate 4 and a light source 5, the light guide plate 4 is bonded between the reflective panel 2 and the cover plate 3 by the optical adhesive 1, at least one side of the light guide plate 4 is provided with a light incident surface, and at least one light source 5 is provided on the light incident surface. The frame decoration region ink layer 32 of the cover plate 3 is arranged above the cover plate base material 31, a light reflection film layer 33 is arranged between the cover plate base material 31 and the frame decoration region ink layer 32, and an optical filling layer 34 is covered above the decoration ink.
The material of the cover substrate 31 may be glass or plastic.
According to the invention, the frame decoration region ink layer 32 is constructed above the cover plate substrate 31, the reflection light film layer 33 is added between the frame decoration region ink layer 32 and the cover plate substrate 31, and the optical filling layer 34 is added above the frame decoration region ink layer 32, so that the reflection light film layer 33 can prevent the light path from directly contacting the decoration region ink layer of the cover plate 3, and the visual interference of uneven display boundary brightness of the light incident surface is improved.
Wherein, the optical filling layer 34 can form an anti-glare function by an embossing mode, or the anti-glare function is formed by adding microparticles into the optical filling layer 34, or an anti-glare film layer is formed above the optical filling layer 34 by a spraying mode; the haze of the anti-glare function is 1% -70%, and the roughness (Ra) is 0.1 mu m-3 mu m.
The optical leveling layer 34 is formed by using one of an acryl resin, an epoxy resin, a mixture of an acryl resin and an epoxy resin, a polyester resin, a polyamide resin, a polyimide resin, a siloxane-based compound, and the like, and by a heat curing or photo curing method.
The reflective light film layer 33 may be arranged to fill the border decoration area or a partial area on the light incident side, the reflectivity of the reflective light film layer 33 is greater than 10% and the specular reflection light (Specular Component Exclude, SCE) is less than 30%.
The reflective light film layer 33 may be formed of a reflective material of silver, copper, gold, or white series, or the reflective light film layer 33 may be a multilayer optical film structure.
The reflective light film layer 33 can be ink or photoresist with various resin components, and is formed by thermal or ultraviolet light curing, and the reflective light film layer 33 can be doped with reflective metals such as gold, silver, copper, aluminum, etc., or added with nonmetallic substances with metallic color; and the white series of reflective materials are oxides or nitrides of doped titanium, silicon, aluminum, etc. Further, the reflective metal film layer 33 is formed on the decorative area of the frame or the local area on the light incident side by electroplating or vacuum coating; or the reflective light film layer 33 is formed by coating the oxide and nitride of doped titanium, silicon or aluminum on the frame decoration area or the partial area on the light incident side in a vacuum coating manner so as to form a multilayer optical coating structure to achieve the purpose of reflecting light.
Alternatively, the reflective light film layer 33 may be formed by adhering an adhesive tape or a reflective patch, which can generate a reflective effect, on the cover substrate 31.
In embodiment 2, as shown in fig. 2, on the basis of embodiment 1, the invention further includes a touch module 5, and the touch module 5 is adhered between the cover plate 3 and the light guide plate 4 through the optical adhesive 1.
In embodiment 3, as shown in fig. 3, on the basis of embodiment 1, the present invention further includes a touch film layer 6, and the touch film layer 6 is formed by constructing a touch circuit directly below the cover substrate 31 without bonding the touch film layer 6 to the cover 3 through the optical adhesive 1.
While particular embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that various changes and modifications may be made to this embodiment without departing from the spirit and scope of the invention, but these changes and modifications are within the scope of the invention.

Claims (10)

1. The front light module comprises a light guide plate and a light source, wherein the light guide plate is adhered between the reflective panel and the cover plate through optical adhesive, at least one side of the light guide plate is provided with a light incident surface, and at least one light source is arranged on the light incident surface; the method is characterized in that: the frame decoration region ink layer of the cover plate is arranged above the cover plate base material, a light reflection film layer is arranged between the cover plate base material and the frame decoration region ink layer, and an optical filling layer is covered above the decoration ink.
2. The front light module reflective display of claim 1, wherein: the touch module is adhered between the cover plate and the light guide plate through optical cement; or the touch control film layer is not required to be attached to the cover plate through optical cement, but is directly constructed below the cover plate.
3. The front light module reflective display of claim 1, wherein: the cover plate base material is glass or plastic.
4. The front light module reflective display of claim 1, wherein: the optical filling layer forms an anti-glare function in an embossing mode, or microparticles are added into the optical filling layer to form the anti-glare function, or an anti-glare film layer is formed above the optical filling layer in a spraying mode; the haze of the anti-glare function is 1% -70%, and the roughness is 0.1 mu m-3 mu m.
5. A front light module reflective display according to claim 1 or 4, characterized in that: the optical leveling layer is formed by adopting an acrylic resin, an epoxy resin, a mixture of the acrylic resin and the epoxy resin, a polyester resin, a polyamide resin, a polyimide resin or a siloxane-based compound through a heat curing or photo curing mode.
6. The front light module reflective display of claim 1, wherein: the reflection light film layer is distributed in the frame decoration area or the local area at the light incident side, the reflectivity of the reflection light film layer is more than 10 percent, and the specular regular reflection light is eliminated by less than 30 percent.
7. A front light module reflective display according to claim 1 or 6, characterized in that: the reflective light film layer is formed by reflective substances of silver series, copper series, gold series or white series, or is of a multilayer optical coating structure.
8. The front light module reflective display of claim 7, wherein: the reflective light film layer is formed by printing ink or photoresistance through thermal or ultraviolet light curing, and the reflective light film layer is doped with reflective metal or is added with nonmetallic substances with metal color; while the white series of reflective materials are oxides or nitrides of doped titanium, silicon, aluminum.
9. The front light module reflective display of claim 7, wherein: the reflective light film layer forms reflective metal into a frame decoration area or a local area on the light incident side in a plating or vacuum coating mode; or the reflective light film layer is formed by plating the oxide and nitride of doped titanium, silicon or aluminum on the frame decoration area or the local area on the light incident side in a vacuum coating mode so as to form a multilayer optical coating structure to achieve the purpose of reflecting light.
10. The front light module reflective display of claim 1, wherein: the reflective light film layer is formed by sticking an adhesive tape or a reflective patch which can generate a reflective effect on the upper side of the cover plate substrate.
CN202310956095.3A 2023-07-31 2023-07-31 Front light module reflective display Pending CN116741054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310956095.3A CN116741054A (en) 2023-07-31 2023-07-31 Front light module reflective display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310956095.3A CN116741054A (en) 2023-07-31 2023-07-31 Front light module reflective display

Publications (1)

Publication Number Publication Date
CN116741054A true CN116741054A (en) 2023-09-12

Family

ID=87902951

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310956095.3A Pending CN116741054A (en) 2023-07-31 2023-07-31 Front light module reflective display

Country Status (1)

Country Link
CN (1) CN116741054A (en)

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