CN106555949B - Front optical module and display module - Google Patents
Front optical module and display module Download PDFInfo
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- CN106555949B CN106555949B CN201510609675.0A CN201510609675A CN106555949B CN 106555949 B CN106555949 B CN 106555949B CN 201510609675 A CN201510609675 A CN 201510609675A CN 106555949 B CN106555949 B CN 106555949B
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- guide plate
- glue
- line
- light guide
- sub
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of front optical module and display module comprising the light-transmitting materials and multiple light sources of multiple stackings.These light-transmitting materials include incidence surface.These light sources configure by incidence surface to provide multiple tracks light beam.At least one person in these light-transmitting materials has edge part adjacent to the position of these light sources, edge part includes the multiple first sub- edges and the multiple second sub- edges, these first sub- edges correspond to the configuration of these light sources, these first sub- edges staggeredly form a line with these second sub- edges, and those first sub- edges are greater than a wherein distance at those second sub- edges to incidence surface to a wherein distance for incidence surface.In addition, a kind of display module is also suggested.Front optical module provided by the invention can make area source have the good uniformity close to the luminous intensity of the part of incidence surface.
Description
Technical field
The present invention relates to a kind of optical module and display module more particularly to a kind of front optical modules and display module.
Background technique
In general, the design of the reflected displaying device (Reflective Display) with front optical module is by preceding light
Module is configured in the top of display module, and light source is arranged in the side light guide plate (Light Guide Panel, LGP), light source
The light issued is able to advance in a manner of total internal reflection in light guide plate, and by Microstructure Fracture total internal reflection behavior, and
It is reflected toward display module direction, light source is converted to the area source of uniform optical distribution.The light reflected toward display module just can
It is reflected using display module and is conveyed to viewer.
Traditionally the front optical module of reflected displaying device includes light source, light guide plate, Optical transparent adhesive (Optical Clear
Adhesive, OCA) and anti-dazzle film (Anti-Glare Film, AG film).Light guide plate is attached at aobvious by Optical transparent adhesive
Show module and anti-dazzle film.In general, light source used in front optical module is discontinuous light source, for example light source can be with
It is multiple light emitting diodes (Light Emitting Diode, LED) being independently arranged.Since light source is discontinuous distribution,
Therefore reflected displaying device is the phenomenon that incident side is easy to produce brightness unevenness, that is, so-called hot spot phenomenon (Hot
Spot)。
In general solving the mode that hot spot phenomenon is taken is to make micro-structure (such as sawtooth in the incidence surface of light guide plate
(Serration) shape micro-structure) either light guide plate mesh point density adjustment, however because quantity of light source reduction with it is reflective
The increase of display application display size, this mode have its limit.In addition, the amplitude that increase light guide plate mesh point density is adjusted is then
The requirement of the contraposition precise degrees of opposite light source will be significantly increased, and limit the assemblability of reflected displaying device instead.
Summary of the invention
The embodiment of the present invention provides a kind of front optical module, and area source can be made close to the luminous intensity of the part of incidence surface
With the good uniformity.
The embodiment of the present invention provides a kind of display module, and the display picture close to incidence surface has good luminous intensity
The uniformity.
One embodiment of the invention provides a kind of front optical module, light-transmitting materials and multiple light sources including multiple stackings.It is more
The light-transmitting materials of a stacking include first surface, second surface and incidence surface.Second surface is relative to first surface.Multiple light
Source is to provide multiple tracks light beam and configuration by incidence surface.At least one in these light-transmitting materials is adjacent to these light sources
Position have an edge part, edge part includes the multiple first sub- edges and the multiple second sub- edges, these light sources correspond to these
First sub- edge configuration, these first sub- edges staggeredly form a line with these second sub- edges, and these first sub- edges are extremely
A wherein distance for incidence surface is greater than a wherein distance at these second sub- edges to incidence surface.
In one embodiment of this invention, these above-mentioned light-transmitting materials include the first glue-line, the first light guide plate and the
Two glue-lines.First light guide plate has incidence surface, and the first light guide plate is between the first glue-line and the second glue-line.First glue-line with
Both second glue-lines at least one with edge part.
In one embodiment of this invention, the refractive index of the first above-mentioned glue-line and the refractive index of the second glue-line are less than first
The refractive index of light guide plate.
In one embodiment of this invention, the material of the first above-mentioned glue-line and the second glue-line includes Optical transparent adhesive
(Optical Clear Adhesive,OCA)。
In one embodiment of this invention, these above-mentioned light-transmitting materials include the first glue-line, the first light guide plate and the
Two glue-lines.First light guide plate has first part and second part, and the refractive index of the first light guide plate is graded index
(Gradient Index,GRIN).First light guide plate is between the first glue-line and the second glue-line, first part and second part
One of them has edge part, and the another one of first part and second part has incidence surface.
In one embodiment of this invention, these above-mentioned light-transmitting materials are led including the first glue-line, the first light guide plate, second
Tabula rasa and the second glue-line.The refractive index of first light guide plate and the second light guide plate is different in essence each other.First light guide plate is located at
Between first glue-line and the second light guide plate.First light guide plate and the second light guide plate one of them have edge part, and first leads
The another one of tabula rasa and the second light guide plate has incidence surface.
In one embodiment of this invention, the shape at each first above-mentioned sub- edge be V-arrangement, semicircle or linear, and
Each second sub- edge is substantially parallel to incidence surface.
In one embodiment of this invention, above-mentioned front optical module further includes a functional layer, and functional layer is configured in the first table
On face, and functional layer is anti-dazzle film layer, protective layer or anti-reflecting layer.
In one embodiment of this invention, the average distance of these first sub- edges to incidence surface is greater than these second sub- sides
Edge to incidence surface average distance.
In one embodiment of this invention, these above-mentioned light sources are along a straight line arranged at equal intervals by incidence surface.
In one embodiment of this invention, each light source is with one of one-to-one these first sub- edges of alignment.
One embodiment of the invention provides a kind of display module, the light transmission material including reflective display panel, multiple stackings
Matter and multiple light sources.The light-transmitting materials of multiple stackings include first surface, second surface and incidence surface.Second surface is opposite
In first surface, second surface is towards reflective display panel, and first surface is back to reflective display panel.Multiple light sources are used
To provide multiple tracks light beam and configuration by incidence surface.At least one in these light-transmitting materials is adjacent to the position of these light sources
Setting has an edge part, and edge part includes the multiple first sub- edges and the multiple second sub- edges, these first sub- edges and these
Second sub- edge staggeredly forms a line, and a wherein distance for these first sub- edges to incidence surface is greater than these second sub- edges
To a wherein distance for incidence surface.
In one embodiment of this invention, these above-mentioned light-transmitting materials include the first glue-line, the first light guide plate and the
Two glue-lines.First light guide plate has incidence surface, and the first light guide plate is between the first glue-line and the second glue-line.First glue-line with
Both second glue-lines at least one with edge part.
In one embodiment of this invention, the refractive index of the first above-mentioned glue-line and the refractive index of the second glue-line are less than first
The refractive index of light guide plate.
In one embodiment of this invention, the material of the first above-mentioned glue-line and the second glue-line includes Optical transparent adhesive
(Optical Clear Adhesive,OCA)。
In one embodiment of this invention, these above-mentioned light-transmitting materials include the first glue-line, the first light guide plate and the
Two glue-lines.First light guide plate has first part and second part, and the refractive index of the first light guide plate is graded index
(Gradient Index,GRIN).First light guide plate is between the first glue-line and the second glue-line, first part and second part
One of them has edge part, and the another one of first part and second part has incidence surface.
In one embodiment of this invention, these above-mentioned light-transmitting materials are led including the first glue-line, the first light guide plate, second
Tabula rasa and the second glue-line.The refractive index of first light guide plate and the second light guide plate is different in essence each other.First light guide plate is located at
Between first glue-line and the second light guide plate.First light guide plate and the second light guide plate one of them have edge part, and first leads
The another one of tabula rasa and the second light guide plate has incidence surface.
In one embodiment of this invention, the shape at each first above-mentioned sub- edge be V-arrangement, semicircle or linear, and
Each second sub- edge is substantially parallel to incidence surface.
In one embodiment of this invention, above-mentioned front optical module further includes a functional layer, and functional layer is configured in the first table
On face, and functional layer is anti-dazzle film layer, protective layer or anti-reflecting layer.
In one embodiment of this invention, the average distance of these first sub- edges to incidence surface is greater than these second sub- sides
Edge to incidence surface average distance.
Based on above-mentioned, the front optical module of the embodiment of the present invention passes through light-transmitting materials and light transmission material with different refractivity
The matter distance design different to incidence surface, can improve hot spot phenomenon.Therefore, the front optical module with the embodiment of the present invention is aobvious
Show that the display picture of module has good light intensity uniform degree, and then makes this display module that there is good optical quality.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to cooperate attached drawing to make
Carefully it is described as follows.
Detailed description of the invention
Figure 1A is the diagrammatic cross-section of one embodiment of the invention.
Figure 1B is the upper schematic diagram of Figure 1A embodiment.
Fig. 1 C and Fig. 1 D is respectively the upper schematic diagram of different embodiments of the invention.
Fig. 2A is the diagrammatic cross-section of a comparing embodiment of the invention.
Fig. 2 B is the upper schematic diagram of Fig. 2A comparing embodiment.
Fig. 2 C is the Y-axis position of the reflective display panel in display module shown by Fig. 2A and Fig. 2 B comparing embodiment
With the simulative relation figure of light relative intensity.
Fig. 2 D is relatively strong for the Y-axis position of the reflective display panel in display module shown by Figure 1A and Figure 1B and light
The simulative relation figure of degree.
Fig. 3 A is the diagrammatic cross-section of another embodiment of the present invention.
Fig. 3 B is the upper schematic diagram of Fig. 3 A embodiment.
Fig. 3 C is the diagrammatic cross-section of Fig. 3 A and the online A-A of Fig. 3 B embodiment.
Fig. 4 A is the diagrammatic cross-section of the display module of further embodiment of this invention.
Fig. 4 B is the upper schematic diagram of Fig. 4 A embodiment.
Fig. 4 C is the diagrammatic cross-section of Fig. 3 A and the online A-A of Fig. 3 B embodiment.
Description of symbols:
100,100a, 100b, 100 ', 300,500: front optical module；
120,320,520: light-transmitting materials；
120a, 320a, 520a: the first glue-line；
120b, 320b, 520b: the second glue-line；
120c, 320c, 520c: the first light guide plate；
320c1: first part；
320c2: second part；
122,222,322,522: edge part；
122a, 322a, 522a: the first sub- edge；
122b, 322b, 522b: the second sub- edge；
130,330,530: light source；
140: functional layer；
200,200a, 200b, 200 ', 400,600: display module；
210,410,610: reflective display panel；
520c2: the second light guide plate；
D: the distance of edge part to incidence surface；
D1: the first sub- edge to incidence surface distance；
D2: the second sub- edge to incidence surface distance；
S: incidence surface；
S1: the first side；
S2: second side；
X:X axis；
Y:Y axis；
Z:Z axis；
OA: optical axis；
SUR1: first surface；
SUR2: second surface；
A-A: line.
Specific embodiment
Figure 1A is the display module diagrammatic cross-section of one embodiment of the invention, and Figure 1B is that the upper view of Figure 1A embodiment is illustrated
Figure.Fig. 1 C and Fig. 1 D is respectively the upper schematic diagram of the display module of different embodiments of the invention.It should be noted that in order to more clear
Chu indicates the configuration relation of the present embodiment display module, and that omits functional layer 140 in fig. ib shows pattern.
In order to be described in detail the present embodiment display module 200 configuration relation, the display module 200 of the present embodiment can
Be considered as and be in the space by X-axis, Y-axis and the construction of Z axis institute, wherein X-direction substantially with the optical axis OA of multiple light sources 130
Direction is parallel, and extends along horizontal direction.Z-direction extends perpendicular to X-direction and along vertical direction.In addition, Y-axis side
Z-direction is also perpendicularly to perpendicular to X-direction.
Referring to Figure 1A and Figure 1B, display module 200 includes the light transmission of reflective display panel 210, multiple stackings
Material 120 and multiple light sources 130.These light-transmitting materials 120 include first surface SUR1, second surface SUR2 and incidence surface
S.Second surface SUR2 is relative to first surface SUR1.Specifically, the first surface SUR1 of these light-transmitting materials 120 and
The one of them of two surface SUR2 is towards reflective display panel 210, and another one is back to reflective display panel 210.It is specific and
Speech, second surface SUR2 is towards reflective display panel 210, and first surface SUR1 is back to reflective display panel 210.These light
Source 130 is to provide multiple tracks light beam and configuration by incidence surface S.Specifically, these light sources 130 are along the straight line in Y-axis
Arranged at equal intervals are by incidence surface S.Then, at least one of these light-transmitting materials 120 is adjacent to the position of these light sources 130
It sets with edge part 122.Edge part 122 includes the multiple first sub- edge 122a and the multiple second sub- edge 122b, these light sources
130 these corresponding first sub- edge 122a configurations, these first sub- edge 122a and these second sub- edge 122b are along Y-axis side
It forms a line to interlocking, and a wherein distance of each first sub- edge 122a to incidence surface S is greater than each second sub- edge 122b extremely
A wherein distance of incidence surface S.Specifically, each light source 130 with one-to-one these first sub- edge 122a of alignment wherein
One of.
It is noted that these light-transmitting materials 120 and these light sources 130 can be considered as front optical module 100, wherein preceding light
Module 100 is multiple tracks light beam provided by these light sources 130 to be incident upon in reflective display panel 210, and multiple tracks light beam
The image of reflective display panel 210 can be shown after 210 surface reflection of reflective display panel.In other words, this reality
The display module 200 for applying example includes front optical module 100 and reflective display panel 210.
Specifically, preceding optical mode group 100 further includes functional layer 140, wherein functional layer 140 is configured at first surface SUR1
On.In the present embodiment, functional layer 140 can be the anti-dazzle film layer with the dizzy function of primary antibody (Anti-Glare).Due to anti-dazzle
Film layer is the film layer reduce with surface reflectivity, in this way, which external light source can be reduced in preceding 100 institute of optical mode group
The reflected light of generation, in addition, also having the function of dispersion external light source, therefore, when user is through the viewing reflection of preceding optical mode group 100
Dazzle will not be caused because of extraneous reflected light when picture shown by formula display panel 210, reduce light to user's mesh
Depending on interference, avoid user from generating dazzling feeling and reduce the display quality of display module 200.In other embodiments,
Functional layer 140 is also possible to the protective layer by Surface hardening treatment (Hard Coating) or passes through anti-reflex treated (Anti
Reflection anti-reflecting layer), the present invention are not limited with the function of functional layer 140.
On the other hand, these light sources 130 can be light emitting diode (Light-Emitting Diode, LED), wherein respectively
The light beam that light emitting diode is issued can be the light beam of the various different wavelength ranges such as feux rouges, green light, blue light or white light.At it
In his embodiment, be also possible to Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) either its
He is suitable for luminous element.In addition, in the present embodiment, the quantity of light emitting diode is, for example, 5, but the present invention is not with light
The wavelength that quantity, type and the light source in source issue is limited.
In the present embodiment, these light-transmitting materials 120 include the first glue-line 120a, the first light guide plate 120c and the second glue
Layer 120b.First light guide plate 120c has incidence surface S, wherein the first light guide plate 120c is located at the first glue-line 120a and the second glue-line
Between 120b, and both the first glue-line 120a and the second glue-line 120b at least one with edge part 122.In the present embodiment
In, e.g. the first glue-line 120a has edge part 122, and the second glue-line 120b does not have edge part 122 then.In an embodiment
In, the first glue-line 120a and the second glue-line 120b can have edge part 122 simultaneously.In another embodiment, the second glue-line 120b
With edge part 122, the first glue-line 120a does not have edge part 122 then, and the present invention is not limited thereto.It should be noted that
Herein, do not have edge part 122 means that glue-line (the first glue-line 120a or the second glue-line 120b) adjacent to the position of incidence surface S
It sets to the distance of incidence surface S, does not change along Y direction.
Referring again to Figure 1A and Figure 1B, it is notable that in the present embodiment, due to the first glue-line 120a and the second glue
Layer 120b the two at least one with edge part 122.By Figure 1B it is found that these first sub- edge 122a and these second
The shape of sub- edge 122b is linear, and these first sub- edge 122a and these second sub- edge 122b substantially parallel to
The edge of incidence surface S.Specifically, these second sub- edge 122b have the first side S1 and relative to the second of the first side S1
Side S2, wherein these light sources 130 are located at the first side S1, these first sub- edge 122a are then located at second side S2.Therefore, this implementation
Example can inside contract design by these the first sub- edge 122a, to reach these first sub- edge 122a to incidence surface S wherein
One distance is greater than a wherein distance of these the second sub- edge 122b to incidence surface S.In another embodiment, these first sub- sides
The average distance of edge 122a to incidence surface S is greater than the average distance of these the second sub- edge 122b to incidence surface S.
Then, Fig. 1 C is please referred to.It is shown shown by the upper schematic diagram and Figure 1B of display module 200a shown by Fig. 1 C
Show that the upper schematic diagram of module 200 is similar, only main difference between the two is: these first sub- edges shown by Fig. 1 C
The shape of 122a is V-arrangement.On the other hand, Fig. 1 D is please referred to, the upper schematic diagram and figure of display module 200b shown by Fig. 1 D
The upper schematic diagram of display module 200 shown by 1B is similar, and only main difference between the two is: shown by Fig. 1 D this
The shape of a little first sub- edge 122a is semicircle.That is, above-mentioned different embodiment is by designing these first sub- sides
Edge 122a have different shapes come reach these the first sub- edge 122a to incidence surface S wherein one distance be greater than these second
A wherein distance of sub- edge 122b to incidence surface S.In another embodiment, these are with the of different shapes first sub- edge
The average distance of 122a to incidence surface S is greater than the average distance of these the second sub- edge 122b to incidence surface S.It should be noted that
The present invention is not limited with the shape of these the first sub- edge 122a, as long as can reach these first sub- edge 122a to entering light
Face S wherein one distance greater than these the second sub- edge 122b to incidence surface S the wherein design of a distance or these first
The average distance of sub- edge 122a to incidence surface S is greater than these second sub- edge 122b to the average distance of incidence surface S, comes under
Within protection scope of the present invention.
Referring again to Figure 1A and Figure 1B, in the present embodiment, the refractive index of the first glue-line 120a and the second glue-line 120b are small
In the refractive index of the first light guide plate 120c.The material of first glue-line 120a and the second glue-line 120b include Optical transparent adhesive
(Optical Clear Adhesive,OCA).First light guide plate 120c is the material as made by visible light transparent material
Material is, for example, including polymethyl methacrylate (Polymethylmethacrylate, PMMA) or polycarbonate
(Polycarbonate).It should be noted that in the present embodiment, the refractive index of the first light guide plate 120c is definite value.Namely
It says, the refractive index of the first light guide plate 120c will not change because position is different, in the different position the first light guide plate 120c
Corresponding refractive index it is substantially the same.
Specifically, in the present embodiment, the refractive index for the medium that two apparent surfaces of the first light guide plate 120c are configured
The smaller than refractive index of the first light guide plate 120c, in more detail, the two of the first light guide plate 120c in the present embodiment are opposite
The medium that surface is configured is respectively air and the first glue-line 120a and air and the second glue-line 120b.According to basic optics
Principle, when the light beam coupling that these light sources 130 provide is to the first light guide plate 120c, if being coupled in the first light guide plate 120c
The incident angle of incident beam (hereinafter referred to as incident beam) is greater than the first light guide plate 120c relative to the corresponding medium configured
Critical angle, then incident beam can do total internal reflection according to the optical principle that incidence angle is equal to angle of reflection in the first light guide plate 120c
(Total Internal Reflection, TIR) advances in the first light guide plate 120c, and if the incident angle of incident beam
When less than the first light guide plate 120c relative to the critical angle for corresponding to the medium configured, then portions incident light beam reflects the first leaded light
Plate 120c is to reflective display panel 210 so that reflective display panel 210 shows image.It follows that if the first light guide plate
When 120c is bigger relative to the critical angle of the medium of corresponding configuration, then there is the incident beam of higher proportion that can refract to reflective aobvious
Show panel 210.If the first light guide plate 120c is got over hour relative to the critical angle of the medium of corresponding configuration, the incidence of minor proportion
Light beam can refract to reflective display panel 210.
Hold above-mentioned, in the present embodiment, the material of the first light guide plate 120c is, for example, polymethyl methacrylate, wherein gathering
The refractive index of methyl methacrylate is about 1.49, and the critical angle for total internal reflection relative to air is about 42.2 degree.Another party
The refractive index of face, either the first glue-line 120a either the second glue-line 120b are all greater than air, therefore the first light guide plate 120c
Critical angle for total internal reflection relative to the first glue-line 120a either the second glue-line 120b is then greater than 42.2 °.When these light sources
When incident beam provided by 130 is coupled in the first light guide plate 120 by the incidence surface S of the first light guide plate 120c, due to these
A part of incident beam provided by light source 130 is greater than these light sources 130 by the distance of the sub- edge 122a of incidence surface S to first
Provided another part incident beam passes through the distance of the sub- edge 122b of incidence surface S to second.In this way, compared to by
The incidence surface S of one light guide plate 120c marches to the incident beam of the second sub- edge 122b, by the incidence surface S of the first light guide plate 120c
There is the incident beam for marching to the first sub- edge 122a lower ratio to refract to reflective display panel 210, and by first
The incidence surface S of light guide plate 120c march to the incident beam of the second sub- edge 122b then ratio with higher refract to it is reflective
Display panel 210.It should be noted that these corresponding first sub- edge 122a settings of these light sources 130 again, in general situation
Under, the first light guide plate 120c is brighter corresponding to the incidence surface S of these the first sub- edge 122a, and the first light guide plate 120c corresponds to
The incidence surface S of these the second sub- edge 122b is darker.Furthermore, it is understood that since the first light guide plate 120c corresponds to these the first sons
The incidence surface S of edge 122a is brighter, but the incidence of the first sub- edge 122a is marched to by the incidence surface S of the first light guide plate 120c
Light beam has lower ratio relative to the incident beam for marching to the second sub- edge 122b of the incidence surface S by the first light guide plate 120c
Example refracts to reflective display panel 210.On the other hand, since the first light guide plate 120c corresponds to these second sub- edge 122a
Incidence surface S it is darker, but it is opposite by the incident beam that the incidence surface S of the first light guide plate 120c marches to the second sub- edge 122b
It is refracted in the incident beam ratio with higher that the incidence surface S by the first light guide plate 120c marches to the first sub- edge 122a
Reflective display panel 210.By above-mentioned configuration, display module 200 can be promoted adjacent to the light intensity uniform of incidence surface S
Degree.In summary factor passes through the edge part 122 of the first glue-line 120a of design or the side of the second glue-line 120b in the present embodiment
To the distance of incidence surface S, the luminous intensity that can effectively promote the reflective display panel 210 adjacent to incidence surface S is equal for edge 122
Evenness.In other words, by above-mentioned configuration, it can be effectively reduced what reflective display panel 210 was generated adjacent to incidence surface S
Hot spot phenomenon (Hot Spot).That is, the display of the display module 200 of the front optical module 100 with the embodiment of the present invention
Picture has good light intensity uniform degree, and then this display module 200 is made to have good optical quality.
Fig. 2A is the diagrammatic cross-section of a comparing embodiment of the invention, and Fig. 2 B is that the upper view of Fig. 2A comparing embodiment is illustrated
Figure.Fig. 2 C is Y-axis position and the light relative intensity of the reflective display panel in the display module of comparing embodiment of the present invention
Simulative relation figure.Fig. 2 D is Y-axis position and the light phase of the reflective display panel in display module shown by Figure 1A and Figure 1B
To the simulative relation figure of intensity.It should be noted that in order to become apparent from the configuration relation for indicating the present embodiment display module, in Fig. 2 B
Middle omission functional layer 140 shows pattern.
In order to become apparent from the effect for 200 embodiment of display module for indicating Figure 1A and Figure 1B of the present invention, one is lifted herein and is compared
Compared with embodiment is used as with Figure 1A of the present invention with the display module 200 of Figure 1B.Referring to Fig. 2A and Fig. 2 B, Fig. 2A and Fig. 2 B
The upper schematic diagram of shown display module 200 ' is similar with the upper schematic diagram of display module 200 shown by Figure 1B, only
Main difference between the two is: the edge part 222 of the first glue-line 120a or the edge part 222 of the second glue-line 120b are in always
Line.
What C referring to figure 2., Fig. 2 C horizontal axis represented corresponds to the reflective display panel of neighbouring incidence surface S in Y direction
On position, unit is millimetre (mm), and what the longitudinal axis represented corresponds to the reflective display panel of neighbouring incidence surface S in Y-axis side
The light relative intensity of upward different location.In this comparing embodiment, in the Y of the reflective display panel 210 of neighbouring incidence surface S
The light relative intensity of these 130 positions of light source of correspondence in axis direction respectively has an apparent crest value.In this comparing embodiment
In, the number of these light sources 130 is 5, therefore Fig. 2 C is shown with 5 apparent crest values.In order to will be adjacent to incidence surface S's
The light intensity uniform degree of reflective display panel 210 is presented in a manner of numerical value, introduces modulation transfer function herein
(Modulation Transfer Function, MTF), that is, the reflective of neighbouring incidence surface S is calculated in a manner of numerical value
The light intensity uniform degree of display panel 210, the formula of modulation transfer function are as follows:
MTF=(T1-T2)/(T1+T2) * 100%
Wherein what T1 was represented be the maximum value of each wave crest average, what T2 was represented is trough between each wave crest
The average of minimum value.It should be noted that representing the reflective of neighbouring incidence surface S when the value that modulation transfer function calculates is bigger
The light intensity uniform degree of display panel 210 is more uneven, conversely, then represent the reflective display panel 210 of neighbouring incidence surface S
Light intensity uniform degree is more uniform.It refer again to Fig. 2 C, Fig. 2 C is further shown with the edge part 122 or the of the first glue-line 120a
The different distance d of the edge part 222 of two glue-line 120b to incidence surface S are parameter, the display module of comparing embodiment of the present invention
The Y-axis position of reflective display panel in 200 ' and the simulative relation figure of light relative intensity.The edge part of first glue-line 120a
122 or second glue-line 120b different distance d of the edge part 222 to incidence surface S corresponding to modulation transfer function value, it is as follows
Described in table 1.
Table 1
| Distance d (millimetre (mm)) | MTF (%) |
| 4 | 12.3 |
| 5.5 | 12.5 |
| 7 | 20.7 |
By above-mentioned table 1 it is found that reducing edge part 222 or the second glue-line 120b of the first glue-line 120a in particular range
Edge part 222 can effectively be such that corresponding modulation transfer function value significantly declines, but this mode to the distance of incidence surface S
It is still restrictive.That is, after edge part 222 is reduced to a certain extent at a distance from incidence surface S, modulation transfer function
The degree of decline can't so obvious.D referring to figure 2., in contrast, in the display module of Figure 1A above-mentioned and Figure 1B
In 200, the distance d1 of these the first sub- edge 122a to incidence surface S is 8 millimeters (mm), and the second sub- edge 122b is to incidence surface
The distance d2 of S is 3 millimeters (mm).It is learnt after being calculated according to above-mentioned parameter, the modulation conversion of the display module 200 of the present embodiment
The numerical value of function is 7.3.That is, the display module 200 ' relative to comparing embodiment, the display module 200 of the present embodiment
The hot spot phenomenon (Hot Spot) that reflective display panel 210 is generated adjacent to incidence surface S can also be effectively reduced.
It should be noted that, following embodiments continue to use the element numbers and partial content of previous embodiment, wherein adopting herein
Be denoted by the same reference numerals identical or approximate element, and the explanation of same technique content is omitted.About clipped
Explanation can refer to previous embodiment, following embodiment will not be repeated herein.
Fig. 3 A is the diagrammatic cross-section of the display module of another embodiment of the present invention.Fig. 3 B is another embodiment of the present invention
The upper schematic diagram of display module.Fig. 3 C is that section of the display module of another embodiment of the present invention in the line A-A of Fig. 3 B is illustrated
Figure.It should be noted that being omitted to become apparent from the configuration relation for indicating each element in the first light guide plate 320c in Fig. 3 B and Fig. 3 C
First glue-line 320a, the second glue-line 320b, functional layer 140 and reflective display panel 410 show pattern.
Referring to display module 400 shown in Fig. 3 A, Fig. 3 B and Fig. 3 C, Fig. 3 A, Fig. 3 B and Fig. 3 C with
Figure 1A is similar with display module 200 shown by Figure 1B, and both only main difference is: shown by Fig. 3 A, Fig. 3 B and Fig. 3 C
Display module 400 in these light-transmitting materials 320 include the first glue-line 320a, the first light guide plate 320c and the second glue-line
320b, wherein the first light guide plate 320c has edge part 322, the first glue-line 320a and the second glue-line 320b neither have edge part
322, here, do not have edge part 322 means that glue-line (the first glue-line 320a or the second glue-line 320b) adjacent to incidence surface
The position of S does not change to the distance of incidence surface S along Y direction.Specifically, the first light guide plate 320c has the
A part of 320c1 and second part 320c2, and the refractive index of the first light guide plate 320c is graded index (Gradient
Index,GRIN).In other words, the refractive index of the first light guide plate 320c can change because of position difference.In the present embodiment, first
The refractive index of light guide plate 320c changes as Z axis coordinate position is different, more specifically, the refractive index of the first light guide plate 320c
It is gradually increased along the Z-direction toward reflective display panel 410.Then, first part 320c1 and second part 320c2 its
One of there is edge part 322, and the another one of first part 320c1 and second part 320c2 have incidence surface S.It is specific and
Speech, in the present embodiment, first part 320c1 have edge part 322, and second part 320c2 then has incidence surface S.First
Divide 320c1 configuration between second part 320c2 and the first glue-line 320a, and second part 320c2 configuration is in first part
Between 320c1 and the second glue-line 320b.(not shown) in other examples, the refractive index of the first light guide plate 320c can also be with
It is to be gradually decreased toward the Z-direction of reflective display panel 410, and the first part 320c1 for corresponding to this embodiment has into light
Face S, second part 320c2 then have edge part 322, and the present invention is not limited thereto.
Referring again to Fig. 3 B, in the present embodiment, edge part 322 has the multiple first sub- edge 322a and multiple second sons
Edge 322b, wherein the shape of these first sub- edge 322a and these the second sub- edge 322b are linear, and the second sub- side
Edge of the edge 322b substantially parallel to incidence surface S.Specifically, these second sub- edge 322b have the first side S1 and phase
For second side S2 of the first side S1, wherein these light sources 330 are located at the first side S1, these first sub- edge 322a are then located at
Two side S2.Furthermore, it is understood that these first sub- edge 322a are located at second side S2.Therefore, the present embodiment can by these first
Sub- edge 322a's inside contracts design, with reach a wherein distance of these the first sub- edge 322a to incidence surface S be greater than these the
A wherein distance of two sub- edge 322b to incidence surface S.In another embodiment, the first sub- edge 322a's to incidence surface S is flat
Distance of the distance greater than these the second sub- edge 322b to incidence surface S.It should be noted that the shape of these the first sub- edge 322a
Shape is also possible to V-arrangement or semicircle as shown by Fig. 1 C or Fig. 1 D, and details are not described herein.
Hold it is above-mentioned, in the present embodiment, since the refractive index of the first light guide plate 320c is along toward reflective display panel 410
Z-direction gradually increase, therefore the refractive index of second part 320c2 be greater than first part 320c1.These light sources 330 provide
Incident beam is coupled in the first light guide plate 320c by the incidence surface S of the first light guide plate 320c.More specifically, these light sources
A part of incident beam provided by 330 is greater than these light sources 330 by the distance of the sub- edge 322a of incidence surface S to first and is mentioned
Another part incident beam of confession passes through the distance of the sub- edge 322b of incidence surface S to second.In this way, be led compared to by first
The incidence surface S of tabula rasa 320c marches to the incident beam of the second sub- edge 322b, is advanced by the incidence surface S of the first light guide plate 320c
There is incident beam to the first sub- edge 322a lower ratio to refract to reflective display panel 410, and by the first leaded light
The incidence surface S of plate 320c marches to the incident beam of the second sub- edge 322b, and then ratio with higher refracts to reflective display
Panel 410, the explanation about further thin portion is such as the content of previous embodiment, and details are not described herein.In the present embodiment, lead to
Cross edge part 322 or the second part 320c2 of the first part 320c1 of first light guide plate 320c of the design with graded index
Edge part 322 to the distance of incidence surface S, can also effectively promote the reflective display panel 210 adjacent to incidence surface S
Light intensity uniform degree.Therefore, by above-mentioned configuration, reflective display panel 410 can also be effectively reduced adjacent to entering light
The hot spot phenomenon (Hot Spot) that face S is generated.
Fig. 4 A is the diagrammatic cross-section of the display module of further embodiment of this invention.Fig. 4 B is the upper of the display module of Fig. 4 A
Depending on schematic diagram.Fig. 4 C be another embodiment of the present invention display module Fig. 4 B line A-A diagrammatic cross-section.It should be noted that
It is, in order to become apparent from the configuration relation for indicating each element in the first light guide plate 520c and the second light guide plate 520c2, in Fig. 4 B and figure
4C omits the first glue-line 520a, the second glue-line 520b, functional layer 140 and reflective display panel 610 show pattern.
Referring to display module 600 shown by Fig. 4 A, Fig. 4 B and Fig. 4 C, Fig. 4 A, Fig. 4 B and Fig. 4 C and figure
1A is similar with display module 200 shown by Figure 1B, and both only main difference is: display module 600 further includes one second leading
Tabula rasa 520c2, wherein the refractive index of the first light guide plate 520c and the second light guide plate 520c2 are different in essence each other, first is guide-lighting
Other refractive index of plate 520c and the second light guide plate 520c2 is definite value, and the refractive index of the first light guide plate 520c is less than second
The refractive index of light guide plate 520c2.First light guide plate 520c is between the first glue-line 520a and the second light guide plate 520c2, and second
Light guide plate 520c2 is between the first light guide plate 520c and the second glue-line 520b.In other words, there are two heaps for the tool of display module 600
Folded light guide plate, that is, two layers of laminated type light guide plate.One of first light guide plate 520c and the second light guide plate 520c2 person
With edge part 522, and the another one of the first light guide plate 520c and the second light guide plate 520c2 have incidence surface S.Specifically,
In the present embodiment, the first light guide plate 520c has edge part 522, and the second light guide plate 520c2 then has incidence surface S.At it
In his embodiment, the refractive index for being also possible to the first light guide plate 520c is greater than the refractive index of the second light guide plate 520c2, and corresponding
Then there is the first light guide plate 520c of (not shown) incidence surface S, the second light guide plate 520c2 then to have edge part 522 in embodiment,
The present invention is not limited thereto.
Referring again to Fig. 4 B, specifically, in the present embodiment, the first light guide plate 520c has edge part 522, and second leads
Tabula rasa 520c2 then has incidence surface S.In the present embodiment, the portions incident light beam that these light sources 530 provide is guide-lighting by second
Incidence surface S in plate 520c2 is coupled in the second light guide plate 520c2.These first sub- edge 522a and these second sub- edges
The shape of 522b is linear, and these second sub- edge 522b are substantially parallel to the edge of incidence surface S.Specifically, this
A little second sub- edge 522b have the first side S1 and second side S2 relative to the first side S1, and wherein these light sources 530 are located at
First side S1, these first sub- edge 522a are then located at second side S2.Therefore, the present embodiment can pass through these the first sub- edges
522a's inside contracts design, is greater than these second sub- sides to reach a wherein distance of these the first sub- edge 522a to incidence surface S
A wherein distance of edge 522b to incidence surface S.In another embodiment, these first sub- edge 522a being averaged to incidence surface S
Distance is greater than the average distance of these the second sub- edge 522b to incidence surface S.It should be noted that these the first sub- edge 522a
Shape is also possible to V-arrangement or semicircle as shown by Fig. 1 C or Fig. 1 D, and details are not described herein.
Hold it is above-mentioned, in the present embodiment, portions incident light beam provided by these light sources 530 pass through the second light guide plate
Incidence surface S in 520c2 is coupled in the second light guide plate 520c2.More specifically, a part provided by these light sources 530 enters
Irradiating light beam is greater than another part incident light provided by these light sources 530 by the distance of the sub- edge 522a of incidence surface S to first
Beam passes through the distance of the sub- edge 522b of incidence surface S to second.In this way, compared to the incidence surface S by the second light guide plate 520c2
The incident beam for marching to the second sub- edge 522b marches to the first sub- edge 522a by the incidence surface S of the second light guide plate 520c2
Portions incident light beam there is lower ratio to refract to reflective display panel 610, and light is entered by the second light guide plate 520c2
Face S marches to the incident beam of the second sub- edge 522b, and then ratio with higher refracts to reflective display panel 610, about
The explanation of further thin portion is such as the content of previous embodiment, and details are not described herein.In the present embodiment, have respectively by design
The edge part 522 of the edge part 522 or the second light guide plate 520c2 that have the first light guide plate 520c of different refractivity is to incidence surface S
Distance, can also effectively promote the light intensity uniform degree of the reflective display panel 610 adjacent to incidence surface S.Therefore, lead to
Above-mentioned configuration is crossed, the hot spot phenomenon (Hot that reflective display panel 610 is generated adjacent to incidence surface S can also be effectively reduced
Spot)。
It should be noted that display module in other embodiments can also in the present embodiment by taking two light guide plates as an example
Be tool there are three or three or more the light guide plates pressed, the present invention be not limited with the number of light guide plate.
In conclusion the front optical module of the embodiment of the present invention passes through multiple light-transmitting materials with different refractivity and this
The distance design different to incidence surface of a little light-transmitting materials, can improve hot spot phenomenon.In addition, the preceding optical mode of the embodiment of the present invention
Block is readily applicable to the light guide plate of heterogeneous material, is for example suitable for graded index light guide plate or 2 layers or more and presses
Formula light guide plate.Therefore, the display picture of the display module of the front optical module with the embodiment of the present invention has good luminous intensity
The uniformity, and then make this display module that there is good optical quality.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (20)
1. a kind of front optical module characterized by comprising
The light-transmitting materials of multiple stackings, comprising:
First surface；
Second surface, relative to the first surface；And
Incidence surface；And
Multiple light sources configure by the incidence surface providing multiple tracks light beam, wherein
At least one in those light-transmitting materials has edge part adjacent to the position of those light sources, and the edge part includes
Multiple first sub- edges and the multiple second sub- edges, those light sources correspond to those the first sub- edge configurations, those first sub- edges
It staggeredly forms a line with those second sub- edges, and a wherein distance for those first sub- edges to the incidence surface is greater than those
Second sub- edge to the incidence surface a wherein distance, those first sub- edges and those second sub- edges relative to it is described enter
Smooth surface inside contracts.
2. front optical module according to claim 1, which is characterized in that those light-transmitting materials include:
First glue-line；
First light guide plate has the incidence surface；And
Second glue-line, wherein first light guide plate is between first glue-line and second glue-line, and described first
Both glue-line and second glue-line at least one with the edge part.
3. front optical module according to claim 2, which is characterized in that the refractive index of first glue-line and second glue
The refractive index of layer is less than the refractive index of first light guide plate.
4. front optical module according to claim 2, which is characterized in that the material of first glue-line and second glue-line
Including Optical transparent adhesive.
5. front optical module according to claim 1, which is characterized in that those light-transmitting materials include:
First glue-line；
First light guide plate has first part and second part, and the refractive index of first light guide plate is graded index；With
And
One second glue-line, wherein first light guide plate is between first glue-line and second glue-line, described first
Part has the edge part with the second part one of them, and the first part and the second part is another
Person has the incidence surface.
6. front optical module according to claim 1, which is characterized in that those light-transmitting materials include:
First glue-line；
First light guide plate；
Second light guide plate；And
Second glue-line, wherein the refractive index of first light guide plate and second light guide plate is different in essence each other, described
One light guide plate between first glue-line and second light guide plate, first light guide plate and second light guide plate its
One of person there is the edge part, and the another one of first light guide plate and second light guide plate have it is described enter light
Face.
7. front optical module according to claim 1, which is characterized in that those the first sub- edge being averaged to the incidence surface
Distance is greater than the average distance at those second sub- edges to the incidence surface.
8. front optical module according to claim 1, which is characterized in that the shape at each first sub- edge is V-arrangement, semicircle
Shape or linear, and each second sub- edge is substantially parallel to the incidence surface.
9. front optical module according to claim 1, which is characterized in that the front optical module further includes a functional layer, described
Functional layer configures on the first surface, and the functional layer is anti-dazzle film layer, protective layer or anti-reflecting layer.
10. front optical module according to claim 1, which is characterized in that the light source is with those first sons of one-to-one alignment
One of edge.
11. front optical module according to claim 1, which is characterized in that those light sources along a straight line arranged at equal intervals in
By the incidence surface.
12. a kind of display module characterized by comprising
Reflective display panel；
The light-transmitting materials of multiple stackings, comprising:
First surface；
Second surface, relative to the first surface, the second surface is towards the reflective display panel, and described first
Surface is back to the reflective display panel；And
Incidence surface；And
Multiple light sources configure by the incidence surface providing multiple tracks light beam, wherein
At least one in those light-transmitting materials has an edge part, the edge part packet adjacent to the position of those light sources
The multiple first sub- edges and the multiple second sub- edges are included, those first sub- edges staggeredly form a line with those second sub- edges,
And a wherein distance for those first sub- edges to the incidence surface is greater than those second sub- edges to wherein the one of the incidence surface
Distance, those first sub- edges are inside contracted with those second sub- edges relative to the incidence surface, and wherein those light sources correspond to those
First sub- edge configuration.
13. display module according to claim 12, which is characterized in that those light-transmitting materials include:
First glue-line；
First light guide plate has the incidence surface；And
Second glue-line, wherein first light guide plate is between first glue-line and second glue-line, and described first
Both glue-line and second glue-line at least one with the edge part.
14. display module according to claim 13, which is characterized in that the refractive index of first glue-line and described second
The refractive index of glue-line is less than the refractive index of first light guide plate.
15. display module according to claim 13, which is characterized in that the material of first glue-line and second glue-line
Material includes Optical transparent adhesive.
16. display module according to claim 12, which is characterized in that those light-transmitting materials include:
First glue-line；
First light guide plate has first part and second part, and the refractive index of first light guide plate is graded index；With
And
Second glue-line, wherein first light guide plate is between first glue-line and second glue-line, described first
Dividing has the edge part, and the another one of the first part and the second part with the second part one of them
With the incidence surface.
17. display module according to claim 12, which is characterized in that those light-transmitting materials include:
First glue-line；
First light guide plate；
Second light guide plate；And
Second glue-line, wherein the refractive index of first light guide plate and second light guide plate is different in essence each other, described
For one light guide plate between first glue-line and second light guide plate, second light guide plate is located at first light guide plate
Between second glue-line, first light guide plate and the second light guide plate one of them have the edge part, and
The another one of first light guide plate and second light guide plate has the incidence surface.
18. display module according to claim 12, which is characterized in that the shape at each first sub- edge is V-arrangement, half
Round or linear, and each second sub- edge is substantially parallel to the incidence surface.
19. display module according to claim 12, which is characterized in that it further include a functional layer, the functional layer configuration
On the first surface, and the functional layer is anti-dazzle film layer, protective layer or anti-reflecting layer.
20. display module according to claim 12, which is characterized in that put down at those first sub- edges to the incidence surface
Average distance of the distance greater than those second sub- edges to the incidence surface.
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