TWI657277B - Display device - Google Patents
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- TWI657277B TWI657277B TW107107474A TW107107474A TWI657277B TW I657277 B TWI657277 B TW I657277B TW 107107474 A TW107107474 A TW 107107474A TW 107107474 A TW107107474 A TW 107107474A TW I657277 B TWI657277 B TW I657277B
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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
- G02F1/13—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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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Abstract
一種顯示裝置,包括顯示模組以及背光模組。背光模組 疊設於顯示模組。背光模組包含導光板、複數個光源以及第一稜鏡片。導光板具有入光面、底面以及相對底面之出光面。第一方向垂直於出光面。光源設置於入光面。於第二方向上光源與導光板具有最短間距。光源沿著第三方向排列。第一稜鏡片設置於出光面。第一稜鏡片具有複數個第一凸起結構。第一凸起結構的折射率大於或等於1.6。光源所提供之一光線經過導光板。 A display device includes a display module and a backlight module. Backlight module Stacked on the display module. The backlight module includes a light guide plate, a plurality of light sources, and a first diaphragm. The light guide plate has a light entrance surface, a bottom surface, and a light exit surface opposite to the bottom surface. The first direction is perpendicular to the light emitting surface. The light source is disposed on the light incident surface. The light source and the light guide plate have the shortest distance in the second direction. The light sources are aligned along the third direction. The first diaphragm is disposed on the light emitting surface. The first diaphragm has a plurality of first raised structures. The refractive index of the first raised structure is greater than or equal to 1.6. One of the light provided by the light source passes through the light guide plate.
Description
本發明是有關於一種顯示裝置,且特別是有關於一種具有背光模組的顯示裝置。 The present invention relates to a display device, and more particularly to a display device with a backlight module.
隨著科技的進步,電子產品在人類的生活中扮演的角色越來越重要,手機、電腦、電視、智慧型手錶......等產品的功能也越來越多。然而,在使用電子產品的各種功能時都需要消耗能源,因此,要如何減少電子產品之能源損耗變成目前各界亟欲解決的問題。 With the advancement of technology, the role of electronic products in human life is becoming more and more important, and the functions of mobile phones, computers, televisions, smart watches, etc. are also increasing. However, energy needs to be consumed when using various functions of electronic products. Therefore, how to reduce the energy loss of electronic products has become an urgent problem to be solved by various circles.
在具備顯示裝置的電子產品中,為了要顯示出具有足夠亮度的畫面,顯示裝置的背光模組往往需要消耗許多能源。在一些便攜式電子產品(如手機、平板電腦等)中,顯示裝置的耗電量若是太高,則電子產品容易出現續航力不足的問題。因此,要如何減少顯示裝置之耗電量便成為了目前急需解決的問題。 In an electronic product provided with a display device, in order to display a screen with sufficient brightness, the backlight module of the display device often needs to consume a lot of energy. In some portable electronic products (such as mobile phones, tablet computers, etc.), if the power consumption of the display device is too high, the electronic products are prone to the problem of insufficient battery life. Therefore, how to reduce the power consumption of the display device has become an urgent problem.
本發明提供一種顯示裝置,能節省背光模組所需要消耗 的能源。 The invention provides a display device, which can save the consumption required by a backlight module. Of energy.
本發明的至少一實施例中,顯示裝置包括顯示模組以及背光模組。背光模組沿著第一方向疊設於顯示模組。背光模組包含導光板、複數個光源以及第一稜鏡片。導光板具有入光面、底面以及相對底面之出光面。第一方向垂直於出光面。複數個光源設置於入光面。於第二方向上光源與導光板具有最短間距。光源沿著第三方向排列。第一方向、第二方向以及第三方向互相正交。第一稜鏡片設置於出光面。第一稜鏡片具有複數個第一凸起結構。第一凸起結構的折射率大於或等於1.6。光源所提供之光線經過導光板。以第二方向為90度且以第一方向為0度,在光線於第一方向與第二方向構成的平面上之光分布中,以13度~70度離開出光面的部分光線佔據離開出光面之光線的總能量的35%以上。 In at least one embodiment of the present invention, the display device includes a display module and a backlight module. The backlight module is stacked on the display module along the first direction. The backlight module includes a light guide plate, a plurality of light sources, and a first diaphragm. The light guide plate has a light entrance surface, a bottom surface, and a light exit surface opposite to the bottom surface. The first direction is perpendicular to the light emitting surface. A plurality of light sources are disposed on the light incident surface. The light source and the light guide plate have the shortest distance in the second direction. The light sources are aligned along the third direction. The first direction, the second direction, and the third direction are orthogonal to each other. The first diaphragm is disposed on the light emitting surface. The first diaphragm has a plurality of first raised structures. The refractive index of the first raised structure is greater than or equal to 1.6. The light provided by the light source passes through the light guide plate. With the second direction being 90 degrees and the first direction being 0 degrees, in the light distribution on the plane formed by the light in the first direction and the second direction, part of the light leaving the light emitting surface at 13 degrees to 70 degrees occupies and leaves the light. More than 35% of the total energy of the surface light.
顯示裝置包括顯示模組以及背光模組。背光模組於第一方向疊設於顯示模組。背光模組包含導光板、複數個光源以及第一稜鏡片。導光板具有入光面、底面以及相對底面之出光面。第一方向垂直於出光面。複數個光源設置於入光面。於第二方向上光源與導光板具有最短間距。光源沿著第三方向排列。第一方向、第二方向以及第三方向互相正交。第一稜鏡片設置於出光面。第一稜鏡片具有複數個第一凸起結構。第一凸起結構的折射率大於或等於1.6。光源所提供之光線經過導光板。以第二方向為90度且以第一方向為0度,在光線於第一方向與第二方向構成的平面上之光分布中,離開出光面之光線之最大亮度位於80度~90度。 The display device includes a display module and a backlight module. The backlight module is stacked on the display module in the first direction. The backlight module includes a light guide plate, a plurality of light sources, and a first diaphragm. The light guide plate has a light entrance surface, a bottom surface, and a light exit surface opposite to the bottom surface. The first direction is perpendicular to the light emitting surface. A plurality of light sources are disposed on the light incident surface. The light source and the light guide plate have the shortest distance in the second direction. The light sources are aligned along the third direction. The first direction, the second direction, and the third direction are orthogonal to each other. The first diaphragm is disposed on the light emitting surface. The first diaphragm has a plurality of first raised structures. The refractive index of the first raised structure is greater than or equal to 1.6. The light provided by the light source passes through the light guide plate. With the second direction being 90 degrees and the first direction being 0 degrees, in the light distribution on the plane formed by the light in the first direction and the second direction, the maximum brightness of the light leaving the light emitting surface is between 80 degrees and 90 degrees.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。 In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.
10、20‧‧‧顯示裝置 10, 20‧‧‧ display device
100‧‧‧顯示模組 100‧‧‧Display Module
200‧‧‧背光模組 200‧‧‧ backlight module
210‧‧‧導光板 210‧‧‧light guide
220‧‧‧複數個光源 220‧‧‧ multiple light sources
230‧‧‧第一稜鏡片 230‧‧‧ first cymbal
240‧‧‧第二稜鏡片 240‧‧‧Second cymbal
250‧‧‧擴散片 250‧‧‧ diffuser
A1、A2‧‧‧方向 A1, A2‧‧‧ direction
B‧‧‧底面 B‧‧‧ underside
D1‧‧‧第一方向 D1‧‧‧ first direction
D2‧‧‧第二方向 D2‧‧‧ Second direction
D3‧‧‧第三方向 D3‧‧‧ Third direction
E‧‧‧出光面 E‧‧‧light surface
I‧‧‧入光面 I‧‧‧ entrance
P‧‧‧電路板 P‧‧‧Circuit Board
P1‧‧‧第一凸起結構 P1‧‧‧First raised structure
P2‧‧‧第二凸起結構 P2‧‧‧Second raised structure
R‧‧‧反射片 R‧‧‧Reflector
X、Y‧‧‧平面 X, Y‧‧‧ plane
α、γ‧‧‧垂直角 α, γ‧‧‧ vertical angle
β、δ‧‧‧水平角 β, δ‧‧‧ horizontal angle
圖1是依照本發明的一實施例的一種顯示裝置的斜視示意圖。 FIG. 1 is a schematic perspective view of a display device according to an embodiment of the invention.
圖2是依照本發明的一實施例的一種導光板的光分布圖。 FIG. 2 is a light distribution diagram of a light guide plate according to an embodiment of the present invention.
圖3是依照本發明的一實施例的一種導光板的光分布圖。 FIG. 3 is a light distribution diagram of a light guide plate according to an embodiment of the present invention.
圖4是依照本發明的一實施例的一種導光板的光分布圖。 FIG. 4 is a light distribution diagram of a light guide plate according to an embodiment of the present invention.
圖5是依照本發明的一實施例的一種顯示裝置的斜視示意圖。 FIG. 5 is a schematic perspective view of a display device according to an embodiment of the invention.
圖6是依照本發明的一實施例的一種擴散片的光分布圖。 FIG. 6 is a light distribution diagram of a diffusion sheet according to an embodiment of the present invention.
圖7是依照本發明的一實施例的一種導光板的光分布圖。 FIG. 7 is a light distribution diagram of a light guide plate according to an embodiment of the present invention.
圖8是依照本發明的一實施例的一種擴散片的光分布圖。 FIG. 8 is a light distribution diagram of a diffusion sheet according to an embodiment of the present invention.
圖9是依照本發明的一實施例的一種擴散片的光分布圖。 FIG. 9 is a light distribution diagram of a diffusion sheet according to an embodiment of the present invention.
圖1是依照本發明的一實施例的一種顯示裝置的斜視示意圖。 FIG. 1 is a schematic perspective view of a display device according to an embodiment of the invention.
請參考圖1,在本實施例中,顯示裝置10包括顯示模組100以及背光模組200,其中背光模組200於第一方向疊設於顯示 模組100。背光模組200包含導光板210、複數個光源220以及第一稜鏡片230。 Please refer to FIG. 1. In this embodiment, the display device 10 includes a display module 100 and a backlight module 200. The backlight module 200 is stacked on the display in a first direction. Module 100. The backlight module 200 includes a light guide plate 210, a plurality of light sources 220, and a first cymbal 230.
於本實施例中,導光板210具有入光面I、底面B以及相對底面B之出光面E。導光板210、第一稜鏡片230與顯示模組100沿著第一方向D1而相疊而設置,換言之,第一方向D1實質地垂直於出光面E。在一些實施例中,導光板210的底面B及/或出光面E上具有複數個微結構(未繪出),微結構例如分布於底面B及/或出光面E上。在一些實施例中,導光板210的材質例如為聚碳酸酯(Polycarbonate,PC)、聚甲基丙烯酸甲脂(Polymethyl mcthacrylate,PMMA)、其他高分子材料或上述材料的組合,但本發明不以此為限。 In this embodiment, the light guide plate 210 has a light incident surface I, a bottom surface B, and a light emitting surface E opposite to the bottom surface B. The light guide plate 210, the first cymbal 230, and the display module 100 are disposed overlapping each other along the first direction D1. In other words, the first direction D1 is substantially perpendicular to the light emitting surface E. In some embodiments, the bottom surface B and / or the light emitting surface E of the light guide plate 210 has a plurality of microstructures (not shown). The microstructures are distributed on the bottom surface B and / or the light emitting surface E, for example. In some embodiments, the material of the light guide plate 210 is, for example, polycarbonate (PC), polymethyl methacrylate (PMMA), other polymer materials, or a combination of the foregoing materials. This is limited.
於本實施例中,光源220例如是設置於電路板P上,且光源220設置於導光板210的入光面I,亦即光源220位置對應於入光面I。於圖1中,光源220設置於導光板210之側表面(如入光面I),使得光源220提供的光線係由導光板的側表面而進入導光板,形成側入式背光模組。於第二方向D2上光源220與導光板210具有最短間距,且多個光源220沿著第三方向D3排列。具體而言,第二方向D2實質垂直於入光面I,第三方向D3則實質平行於入光面I,且第一方向D1、第二方向D2以及第三方向D3互相實質正交。光源220例如可以發出白光、藍光或其他顏色的光線,在本實施例中,係以發出白光的光源220為例,但本發明不以此為限。 In this embodiment, the light source 220 is disposed on the circuit board P, and the light source 220 is disposed on the light incident surface I of the light guide plate 210, that is, the position of the light source 220 corresponds to the light incident surface I. In FIG. 1, the light source 220 is disposed on a side surface of the light guide plate 210 (such as the light incident surface I), so that the light provided by the light source 220 enters the light guide plate from the side surface of the light guide plate to form a side-type backlight module. The light source 220 and the light guide plate 210 have the shortest distance in the second direction D2, and the plurality of light sources 220 are arranged along the third direction D3. Specifically, the second direction D2 is substantially perpendicular to the light incident surface I, the third direction D3 is substantially parallel to the light incident surface I, and the first direction D1, the second direction D2, and the third direction D3 are substantially orthogonal to each other. The light source 220 may emit, for example, white light, blue light, or other colors of light. In this embodiment, the white light source 220 is used as an example, but the present invention is not limited thereto.
於本實施例中,第一稜鏡片230設置於出光面E,使得第一稜鏡片230位於顯示模組100與導光板210之間。第一稜鏡片230具有複數個第一凸起結構P1。第一凸起結構P1例如為三角柱形,且第一凸起結構P1沿著方向A1排列。第一凸起結構P1的折射率大於或等於1.6。第一凸起結構P1的材質例如為高交聯壓克力樹脂(Crosslinked acrylic resin)、其他高分子材料或上述材料的組合,但本發明不以此為限。 In this embodiment, the first cymbal 230 is disposed on the light emitting surface E, so that the first cymbal 230 is located between the display module 100 and the light guide plate 210. The first diaphragm 230 has a plurality of first protruding structures P1. The first convex structure P1 is, for example, a triangular column shape, and the first convex structures P1 are arranged along the direction A1. The refractive index of the first convex structure P1 is greater than or equal to 1.6. The material of the first protruding structure P1 is, for example, a highly crosslinked acrylic resin, other polymer materials, or a combination of the foregoing materials, but the present invention is not limited thereto.
在一些實施例中,背光模組200更包括第二稜鏡片240以及反射片R。第二稜鏡片240設置於第一稜鏡片230與導光板210之間,且第二稜鏡片240具有複數個第二凸起結構P2。第二凸起結構P2例如為三角柱形,且第二凸起結構P2沿著方向A2排列,方向A2例如垂直於方向A1。於圖1中,第一稜鏡片230之凸起結構P1係沿著方向A1排列,且方向A1實質平行於第二方向D2。同時,第二稜鏡片240之凸起結構P2則沿著方向A2排列,且方向A2實質平行於第三方向D3。於另一變形例中,第一稜鏡片230之凸起結構P1則可沿著方向A2排列,而第二稜鏡片240之凸起結構P2為沿著方向A1排列。於另一變形例中,方向A1與方向A2實質垂直,亦即第一稜鏡片之凸起結構P1的走向與第二稜鏡片之凸起結構P2的走向為實質正交,但方向A1與第二方向D2之間夾有角度。換言之,方向A1與第二方向D2之間並非為平行,相比於圖1來說,方向A1為以第二方向D2為基準,以順時針或逆時針方向旋轉一角度,助於減少光學條紋。第二凸 起結構P2的折射率大於或等於1.6。第二凸起結構P2的材質例如為高交聯壓克力樹脂(Crosslinked acrylic resin)、其他高分子材料或上述材料的組合,但本發明不以此為限。於本實施例中,折射率大於或等於1.6的第一凸起結構P1及第二凸起結構P2可以更佳的與導光板210配合,使離開第一稜鏡片230及第二稜鏡片240的光線更加集中。具體而言,以折射率大於或等於1.6的稜鏡片來說,最佳的光線入射角度為13~70度。 In some embodiments, the backlight module 200 further includes a second mask 240 and a reflective sheet R. The second cymbal 240 is disposed between the first cymbal 230 and the light guide plate 210, and the second cymbal 240 has a plurality of second protruding structures P2. The second convex structure P2 is, for example, a triangular column shape, and the second convex structures P2 are arranged along the direction A2, and the direction A2 is, for example, perpendicular to the direction A1. In FIG. 1, the protruding structures P1 of the first diaphragm 230 are arranged along the direction A1, and the direction A1 is substantially parallel to the second direction D2. At the same time, the protruding structures P2 of the second cymbal 240 are arranged along the direction A2, and the direction A2 is substantially parallel to the third direction D3. In another modification, the convex structures P1 of the first cymbal 230 can be arranged along the direction A2, and the convex structures P2 of the second cymbal 240 can be arranged along the direction A1. In another modification, the direction A1 is substantially perpendicular to the direction A2, that is, the direction of the convex structure P1 of the first cymbal and the direction of the convex structure P2 of the second cymbal are substantially orthogonal, but the direction A1 and the first There is an angle between the two directions D2. In other words, the direction A1 and the second direction D2 are not parallel. Compared to FIG. 1, the direction A1 is based on the second direction D2 and rotated by an angle in a clockwise or counterclockwise direction, which helps reduce optical fringes. . Second convex The refractive index of the structure P2 is greater than or equal to 1.6. The material of the second protruding structure P2 is, for example, a highly crosslinked acrylic resin, other polymer materials, or a combination of the foregoing materials, but the present invention is not limited thereto. In this embodiment, the first convex structure P1 and the second convex structure P2 with a refractive index greater than or equal to 1.6 can better cooperate with the light guide plate 210, so that the The light is more concentrated. Specifically, for a diaphragm with a refractive index greater than or equal to 1.6, the optimal light incident angle is 13 to 70 degrees.
於本實施例中,反射片R設置於導光板210之底面B。在一些實施例中,反射片R的反射率大於或等於95%,詳言之,以可見光波長範圍為380~780nm來看,其反射率大於或等於95%,用以增加光學利用率,進而提高亮度。在一些實施例中,反射片中還包括擴散粒子,可減少於反射片吸附於導光板的情況,但本發明不以此為限。 In this embodiment, the reflection sheet R is disposed on the bottom surface B of the light guide plate 210. In some embodiments, the reflectance of the reflective sheet R is greater than or equal to 95%. In particular, when the visible light wavelength range is 380 to 780 nm, the reflectance is greater than or equal to 95%, which is used to increase the optical utilization rate, and Increase brightness. In some embodiments, the reflective sheet further includes diffusion particles, which can reduce the situation that the reflective sheet is adsorbed on the light guide plate, but the present invention is not limited thereto.
圖2是依照本發明的一實施例的一種導光板的光分布圖。圖3是依照本發明的一實施例的一種導光板的光分布圖。圖4是依照本發明的一實施例的一種導光板的光分布圖。圖2~圖4例如是圖1之實施例的導光板的光分布圖。 FIG. 2 is a light distribution diagram of a light guide plate according to an embodiment of the present invention. FIG. 3 is a light distribution diagram of a light guide plate according to an embodiment of the present invention. FIG. 4 is a light distribution diagram of a light guide plate according to an embodiment of the present invention. 2 to FIG. 4 are light distribution diagrams of the light guide plate of the embodiment of FIG. 1, for example.
圖2是光源220所提供之光線在經過導光板210後,於不同角度下之光分布圖。舉例來說,圖2例如為圖1中之光源220發出的光線在進入導光板210後,以不同角度離開導光板210中心的光分布圖。 FIG. 2 is a light distribution diagram of light provided by the light source 220 at different angles after passing through the light guide plate 210. For example, FIG. 2 is a light distribution diagram of the light emitted by the light source 220 in FIG. 1 leaving the center of the light guide plate 210 at different angles after entering the light guide plate 210.
圖3是光源220所提供之光線在經過導光板210後,以 不同垂直角α離開出光面E之光線的光分布圖,其中垂直角α可以為正值或負值。圖3之縱軸的單位為nits且橫軸單位為度。請參考圖1與圖3,以第二方向D2為90度且以第一方向D1為0度,在光線於第一方向D1與第二方向D2構成的平面X上之光分布中,垂直角α例如是離開出光面E之光線與第一方向D1在平面X上的夾角,且第一方向D1與第二方向D2之間的垂直角α為正值,第一方向D1與相反於第二方向D2之方向之間的垂直角α為負值。換言之,同時對照圖2,則圖3對應了圖2的線段L1,在圖2中,中心點對應了圖3的0度,圖2中越靠近線段L1上方的垂直角α越大,圖2中越靠近線段L1下方的垂直角α越小。在本實施例中,在平面X上之光分布中,以13度~70度離開出光面E的部分光線佔據離開出光面E之光線的總能量的35%以上,其中又以40%以上較佳。換句話說,光線較佳集中於以13度~70度的垂直角α離開出光面E,藉此,導光板210可以更佳的與稜鏡片(例如為第一稜鏡片230及第二稜鏡片240)配合以增加顯示裝置的光學亮度。前述之光線的能量分布例如可以由圖3的光分布圖之積分面積求得,即13度~70度的範圍內之積分面積佔據總積分面積的35%以上,且又以40%以上較佳。 FIG. 3 shows the light provided by the light source 220 after passing through the light guide plate 210, Light distribution diagrams of rays leaving the light emitting surface E at different vertical angles α, where the vertical angle α can be positive or negative. The unit of the vertical axis in FIG. 3 is nits and the unit of the horizontal axis is degrees. Please refer to FIG. 1 and FIG. 3, with the second direction D2 being 90 degrees and the first direction D1 being 0 degrees, in the light distribution on the plane X formed by the first direction D1 and the second direction D2, the vertical angle α is, for example, the angle between the light leaving the light emitting surface E and the first direction D1 on the plane X, and the vertical angle α between the first direction D1 and the second direction D2 is a positive value, and the first direction D1 is opposite to the second direction The vertical angle α between the directions of the direction D2 is negative. In other words, referring to FIG. 2 at the same time, FIG. 3 corresponds to the line segment L1 of FIG. 2. In FIG. 2, the center point corresponds to 0 degree of FIG. 3. The closer to the line segment L1 in FIG. 2 is, the larger the vertical angle α is. The smaller the vertical angle α near the line segment L1. In this embodiment, in the light distribution on the plane X, part of the light leaving the light emitting surface E at 13 to 70 degrees occupies more than 35% of the total energy of the light leaving the light emitting surface E, and more than 40% good. In other words, the light is preferably focused away from the light exit surface E at a vertical angle α of 13 ° to 70 °, thereby the light guide plate 210 can be better aligned with the cymbals (for example, the first and second cymbals 230 and 2 240) Cooperate to increase the optical brightness of the display device. The energy distribution of the aforementioned light can be obtained, for example, from the integrated area of the light distribution diagram in FIG. 3, that is, the integrated area in the range of 13 degrees to 70 degrees occupies more than 35% of the total integrated area, and more preferably 40% or more .
在本實施例中,在平面X上之光分布中,離開出光面E之光線之最大亮度位於80度~90度。換句話說,在本實施例中,以垂直角α為80度~90度離開出光面E之光線的亮度最大。 In this embodiment, in the light distribution on the plane X, the maximum brightness of the light leaving the light emitting surface E is between 80 degrees and 90 degrees. In other words, in this embodiment, the brightness of the light leaving the light emitting surface E at a vertical angle α of 80 degrees to 90 degrees is the largest.
圖4是光源220所提供之光線以不同水平角β抵達顯示 模組100之光線的光分布圖,其中水平角β可以為正值或負值。水平角β例如是抵達顯示模組100之光線與第一方向D1在平面Y上的夾角,且第一方向D1與第三方向D3之間的水平角β為正值,第一方向D1與相反於第三方向D3之方向之間的水平角β為負值。換言之,同時對照圖2,則圖4對應了圖2的線段L2。在一些實施例中,光源220發出的光線會經過導光板210、第一稜鏡片230、第二稜鏡片240以及其他光學膜片(例如為擴散片、增亮膜(Dual Brightness Enhancement Film,DBEF)或其他光學膜片),接著才抵達顯示模組100。圖4之縱軸的單位為nits且橫軸單位為度。請參考圖1與圖4,以第三方向D3為90度且以第一方向D1為0度,離開出光面E之光線於第一方向D1與第三方向D3構成的平面Y上之光分布的半高寬約為49度~52度,其中半高寬為光在進入顯示模組100前的半輝度角,且包含了由水平角β為負值的區域以及水平角β為正值的區域,藉此,背光模組200所發出之光線能更加準直,在一些實施例中,顯示裝置的視角為-24.5~+24.5度,亦即以第一方向D1為基準而形成正值、負值角度的對稱視角分布,其半高寬為49度,但本發明不以此為限。於其他實施例中,顯示裝置的視角可為-10~+39度,亦即以第一方向D1為基準而形成正值、負值角度的非對稱視角分布。 FIG. 4 shows the light provided by the light source 220 arriving at different horizontal angles β. The light distribution diagram of the light of the module 100, wherein the horizontal angle β can be a positive value or a negative value. The horizontal angle β is, for example, an angle between the light reaching the display module 100 and the first direction D1 on the plane Y, and the horizontal angle β between the first direction D1 and the third direction D3 is a positive value, and the first direction D1 is opposite to The horizontal angle β between the directions in the third direction D3 is negative. In other words, referring to FIG. 2 at the same time, FIG. 4 corresponds to the line segment L2 of FIG. 2. In some embodiments, the light emitted by the light source 220 passes through the light guide plate 210, the first fascia 230, the second fascia 240, and other optical films (e.g., a diffusion film, dual brightness enhancement film (DBEF) Or other optical film), and then arrive at the display module 100. The unit of the vertical axis in FIG. 4 is nits and the unit of the horizontal axis is degrees. Please refer to FIGS. 1 and 4, with the third direction D3 being 90 degrees and the first direction D1 being 0 degrees, the light distribution on the plane Y formed by the first direction D1 and the third direction D3 from the light exiting the light emitting surface E. The FWHM is about 49 degrees to 52 degrees, where the FWHM is the half-brightness angle of the light before it enters the display module 100, and includes the area where the horizontal angle β is negative and the horizontal angle β is positive. Area, whereby the light emitted by the backlight module 200 can be more collimated. In some embodiments, the viewing angle of the display device is -24.5 to +24.5 degrees, that is, a positive value is formed based on the first direction D1, The symmetrical viewing angle distribution of negative angles has a FWHM of 49 degrees, but the invention is not limited thereto. In other embodiments, the viewing angle of the display device may be -10 to +39 degrees, that is, an asymmetric viewing angle distribution with positive and negative angles is formed based on the first direction D1.
圖5是依照本發明的一實施例的一種顯示裝置的斜視示意圖。在此必須說明的是,圖5的實施例沿用圖1的實施例的元件標號與部分內容,其中採用相同或近似的標號來表示相同或近 似的元件,並且省略了相同技術內容的說明。關於省略部分的說明可參考前述實施例,在此不贅述。 FIG. 5 is a schematic perspective view of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 5 follows the component numbers and parts of the embodiment of FIG. 1, and the same or similar reference numerals are used to indicate the same or near Similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein.
圖5之實施例與圖1之實施例的主要差異在於:圖5之顯示裝置20的背光模組200更包括擴散片250。擴散片250例如平行於導光板210的出光面E而設置。請參考圖5,擴散片250設置於導光板210與該第一稜鏡片230之間。 The main difference between the embodiment of FIG. 5 and the embodiment of FIG. 1 is that the backlight module 200 of the display device 20 of FIG. 5 further includes a diffusion sheet 250. The diffusion sheet 250 is provided in parallel to the light exit surface E of the light guide plate 210, for example. Please refer to FIG. 5, a diffusion sheet 250 is disposed between the light guide plate 210 and the first diaphragm 230.
圖6是依照本發明的一實施例的一種擴散片的光分布圖。圖6是光源220所提供之光線在經過擴散片250後,於不同角度下之光分布圖。舉例來說,圖6例如為圖5中之光源220發出的光線在經過導光板210並進入擴散片250後,以不同角度離開擴散片250中心的光分布圖。圖7是依照本發明的一實施例的一種導光板的光分布圖,例如是圖5之實施例的導光板的光分布圖。具體而言,圖7是光源220所提供之光線在經過導光板210後,以不同垂直角α離開出光面E之光線的光分布圖,其中垂直角α可以為正值或負值。圖7之縱軸的單位為nits且橫軸單位為度。 FIG. 6 is a light distribution diagram of a diffusion sheet according to an embodiment of the present invention. FIG. 6 is a light distribution diagram of light provided by the light source 220 at different angles after passing through the diffusion sheet 250. For example, FIG. 6 is a light distribution diagram of the light emitted by the light source 220 in FIG. 5 leaving the center of the diffusion sheet 250 at different angles after passing through the light guide plate 210 and entering the diffusion sheet 250. FIG. 7 is a light distribution diagram of a light guide plate according to an embodiment of the present invention, such as a light distribution diagram of the light guide plate of the embodiment of FIG. 5. Specifically, FIG. 7 is a light distribution diagram of the light rays provided by the light source 220 leaving the light emitting surface E at different vertical angles α after passing through the light guide plate 210, wherein the vertical angle α may be a positive value or a negative value. The unit of the vertical axis in FIG. 7 is nits and the unit of the horizontal axis is degrees.
請參考圖5與圖7,以第二方向D2為90度且以第一方向D1為0度,在光線於第一方向D1與第二方向D2構成的平面X上之光分布中,垂直角α例如是離開出光面E之光線與第一方向D1在平面X上的夾角。換言之,同時對照圖6,則圖7對應了圖6的線段L1。在本實施例中,在平面X上之光分布中,以13度~70度離開出光面E的部分光線佔據離開出光面E之光線的總 能量的35%以上,其中又以40%以上較佳。換句話說,光線較佳集中於以13度~70度的垂直角α離開出光面E,藉此,導光板210可以更佳的與稜鏡片(例如為第一稜鏡片230及第二稜鏡片240)配合以增加顯示裝置的光學亮度。前述之光線的能量分布例如可以由圖6的光分布圖之積分面積求得,即13度~70度的範圍內之積分面積佔據總積分面積的35%以上,且又以40%以上較佳。 Please refer to FIGS. 5 and 7, with the second direction D2 being 90 degrees and the first direction D1 being 0 degrees, in the light distribution on the plane X formed by the first direction D1 and the second direction D2, the vertical angle α is, for example, an angle between the light leaving the light emitting surface E and the first direction D1 on the plane X. In other words, referring to FIG. 6 at the same time, FIG. 7 corresponds to the line segment L1 of FIG. 6. In this embodiment, in the light distribution on the plane X, a part of the light rays leaving the light emitting surface E at 13 to 70 degrees occupy the total light rays leaving the light emitting surface E. More than 35% of the energy, of which more than 40% is better. In other words, the light is preferably focused away from the light exit surface E at a vertical angle α of 13 ° to 70 °, thereby the light guide plate 210 can be better aligned with the cymbals (for example, the first cymbal 230 and the second cymbal 240) Cooperate to increase the optical brightness of the display device. The energy distribution of the aforementioned light can be obtained, for example, from the integrated area of the light distribution diagram in FIG. 6, that is, the integrated area in the range of 13 degrees to 70 degrees occupies more than 35% of the total integrated area, and more preferably 40% or more .
在本實施例中,在平面X上之光分布中,離開出光面E之光線之最大亮度位於80度~90度。換句話說,在本實施例中,以垂直角α為80度~90度離開出光面E之光線的亮度最大。 In this embodiment, in the light distribution on the plane X, the maximum brightness of the light leaving the light emitting surface E is between 80 degrees and 90 degrees. In other words, in this embodiment, the brightness of the light leaving the light emitting surface E at a vertical angle α of 80 degrees to 90 degrees is the largest.
圖8是依照本發明的一實施例的一種擴散片的光分布圖。圖9是依照本發明的一實施例的一種擴散片的光分布圖。圖7~圖9例如是圖5之實施例的擴散片的光分布圖。 FIG. 8 is a light distribution diagram of a diffusion sheet according to an embodiment of the present invention. FIG. 9 is a light distribution diagram of a diffusion sheet according to an embodiment of the present invention. 7 to 9 are light distribution diagrams of the diffusion sheet of the embodiment of FIG. 5, for example.
圖8是光源220所提供之光線在經過導光板210以及擴散片250後,以不同垂直角γ離開擴散片250之光線的光分布圖其中垂直角γ可以為正值或負值。圖8之縱軸的單位為nits且橫軸單位為度。請參考圖5與圖8,以第二方向D2為90度且以第一方向D1為0度,在光線於第一方向D1與第二方向D2構成的平面X上之光分布中,垂直角γ例如是離開擴散片250之光線與第一方向D1在平面X上的夾角,且第一方向D1與第二方向D2之間的垂直角γ為正值,第一方向D1與相反於第二方向D2之方向之間的垂直角γ為負值。換言之,同時對照圖6,則圖8對應了圖6的線段L1,在圖6中,中心點對應了圖8的0度,圖6中越 靠近線段L1上方的垂直角γ越大,圖6中越靠近線段L1下方的垂直角γ越小。在本實施例中,在平面X上之光分布中,以13度~70度離開擴散片250的部分光線佔據離開出光面E之光線的總能量的70%以上。換句話說,光線較佳集中於以13度~70度的垂直角γ離開擴散片250。藉此,導光板210及擴散片250可以更佳的與稜鏡片(例如為第一稜鏡片230及第二稜鏡片240)配合以增加顯示裝置的光學亮度。前述之光線的能量分布例如可以由圖8的光分布圖之積分面積求得,即13度~70度的範圍內之積分面積佔據總積分面積的70%以上。 FIG. 8 is a light distribution diagram of light provided by the light source 220 after passing through the light guide plate 210 and the diffusion sheet 250 and leaving the diffusion sheet 250 at different vertical angles γ. The vertical angle γ can be positive or negative. The unit of the vertical axis in FIG. 8 is nits and the unit of the horizontal axis is degrees. Please refer to FIG. 5 and FIG. 8, with the second direction D2 being 90 degrees and the first direction D1 being 0 degrees, in the light distribution on the plane X formed by the first direction D1 and the second direction D2, the vertical angle γ is, for example, the angle between the light leaving the diffusion sheet 250 and the first direction D1 on the plane X, and the vertical angle γ between the first direction D1 and the second direction D2 is a positive value, and the first direction D1 is opposite to the second direction The vertical angle γ between the directions of the direction D2 is negative. In other words, referring to FIG. 6 at the same time, FIG. 8 corresponds to the line segment L1 of FIG. 6. In FIG. 6, the center point corresponds to 0 degree of FIG. 8. The larger the vertical angle γ near the line segment L1 is, the smaller the vertical angle γ near the line segment L1 in FIG. 6 is. In this embodiment, in the light distribution on the plane X, part of the light leaving the diffusion sheet 250 at 13 to 70 degrees occupies more than 70% of the total energy of the light leaving the light emitting surface E. In other words, the light is preferably focused on leaving the diffusion sheet 250 at a vertical angle γ of 13 degrees to 70 degrees. Thereby, the light guide plate 210 and the diffusion sheet 250 can better cooperate with the cymbal (for example, the first cymbal 230 and the second cymbal 240) to increase the optical brightness of the display device. The energy distribution of the aforementioned light can be obtained, for example, from the integrated area of the light distribution diagram in FIG. 8, that is, the integrated area in the range of 13 degrees to 70 degrees occupies more than 70% of the total integrated area.
在本實施例中,在平面X上之光分布中,離開擴散片250之光線之最大亮度位於40度~60度。換句話說,在本實施例中,以垂直角γ為40度~60度離開出光面E之光線的亮度最大。 In this embodiment, in the light distribution on the plane X, the maximum brightness of the light leaving the diffusion sheet 250 is between 40 degrees and 60 degrees. In other words, in this embodiment, the brightness of the light leaving the light emitting surface E at a vertical angle γ of 40 degrees to 60 degrees is the largest.
圖9是光源220所提供之光線以不同水平角δ抵達顯示模組100之光線的光分布圖。其中水平角δ可以為正值或負值。水平角δ例如是抵達顯示模組100之光線與第一方向D1在平面Y上的夾角,且第一方向D1與第三方向D3之間的水平角δ為正值,第一方向D1與相反於第三方向D3之方向之間的水平角δ為負值。換言之,同時對照圖6,則圖9對應了圖6的線段L2。在一些實施例中,光源220發出的光線會經過導光板210、第一稜鏡片230、第二稜鏡片240以及其他光學膜片(例如為擴散片、反射式偏光增光片或其他光學膜片),接著才抵達顯示模組100。圖9之縱軸的單位為nits且橫軸單位為度。請參考圖5與圖9,以第三 方向D3為90度且以第一方向D1為0度,抵達顯示模組100之光線於第一方向D1與第三方向D3構成的平面Y上之光分布的半高寬約為49度~52度,其中半高寬為光在進入顯示模組100前的半輝度角,且包含了由水平角δ為負值的區域以及水平角δ為正值的區域,藉此,背光模組200所發出之光線能更加準直,在一些實施例中,顯示裝置的視角為-24.5~+24.5度,亦即以第一方向D1為基準而形成正值、負值角度的對稱視角分布,其半高寬為49度,但本發明不以此為限。於其他實施例中,顯示裝置的視角可為-10~+39度,亦即以第一方向D1為基準而形成正值、負值角度的非對稱視角分布。 FIG. 9 is a light distribution diagram of light rays provided by the light source 220 reaching the display module 100 at different horizontal angles δ. The horizontal angle δ can be a positive value or a negative value. The horizontal angle δ is, for example, an angle between the light reaching the display module 100 and the first direction D1 on the plane Y, and the horizontal angle δ between the first direction D1 and the third direction D3 is a positive value, and the first direction D1 is opposite to The horizontal angle δ between the directions in the third direction D3 is negative. In other words, referring to FIG. 6 at the same time, FIG. 9 corresponds to the line segment L2 of FIG. 6. In some embodiments, the light emitted by the light source 220 passes through the light guide plate 210, the first diaphragm 230, the second diaphragm 240, and other optical films (such as a diffuser, a reflective polarized light enhancement film, or other optical films). , And then arrive at the display module 100. The unit of the vertical axis in FIG. 9 is nits and the unit of the horizontal axis is degrees. Please refer to FIG. 5 and FIG. The direction D3 is 90 degrees and the first direction D1 is 0 degrees. The full width at half maximum height of the light distribution on the plane Y formed by the first direction D1 and the third direction D3 of the light reaching the display module 100 is about 49 degrees to 52 degrees. Degrees, where the full width at half maximum is the half-brightness angle of the light before it enters the display module 100, and includes a region where the horizontal angle δ is negative and a region where the horizontal angle δ is positive. The emitted light can be more collimated. In some embodiments, the viewing angle of the display device is -24.5 to +24.5 degrees, that is, a symmetrical viewing angle distribution with positive and negative angles is formed based on the first direction D1. The height and width are 49 degrees, but the invention is not limited thereto. In other embodiments, the viewing angle of the display device may be -10 to +39 degrees, that is, an asymmetric viewing angle distribution with positive and negative angles is formed based on the first direction D1.
綜上所述,本發明的顯示裝置藉由調整光線在經過導光板或光線在經過導光板及擴散片後之角度,可以使背光模組具有更高的亮度,且能減少顯示裝置所需消耗的能源。在一些實施例中,藉由導光板搭配第一稜鏡片以及第二稜鏡片可以進一步縮小光線之水平角,使光線更集中,並且進一步增加背光模組的亮度。 In summary, the display device of the present invention can make the backlight module have higher brightness by adjusting the angle of the light after passing through the light guide plate or the light after passing through the light guide plate and the diffusion sheet, and can reduce the consumption of the display device. Of energy. In some embodiments, the light guide plate with the first and second cymbals can further reduce the horizontal angle of the light, make the light more concentrated, and further increase the brightness of the backlight module.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.
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Families Citing this family (4)
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---|---|---|---|---|
CN111221069B (en) * | 2018-11-23 | 2022-04-12 | 群创光电股份有限公司 | Backlight module and light guide plate thereof and display device using backlight module |
CN109686244A (en) * | 2019-02-02 | 2019-04-26 | 京东方科技集团股份有限公司 | Backlight module and display panel |
CN212647216U (en) * | 2020-01-16 | 2021-03-02 | 京东方科技集团股份有限公司 | Transparent display device |
CN114203033B (en) * | 2021-11-16 | 2023-09-08 | 深圳市高展光电有限公司 | Blue light prevention display screen assembly |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1624543A (en) * | 2003-12-05 | 2005-06-08 | 阿尔卑斯电气株式会社 | Prism sheet, illuminating device, surface emitting device, and liquid crystal display device |
TW201020591A (en) * | 2008-11-20 | 2010-06-01 | Efun Technology Co Ltd | Prism sheet and anti-Newton ring prism sheet unit |
CN102109712A (en) * | 2009-12-29 | 2011-06-29 | 乐金显示有限公司 | Light shaping film and liquid crystal display device including the same |
TW201305627A (en) * | 2011-06-07 | 2013-02-01 | Sumitomo Chemical Co | Light guide plate, surface light source device, transmission-type image display device |
JP2014530455A (en) * | 2011-09-20 | 2014-11-17 | スリーエム イノベイティブプロパティズカンパニー | Backlight device |
TW201447434A (en) * | 2013-06-11 | 2014-12-16 | Au Optronics Corp | Backlight module |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3457591B2 (en) * | 1999-10-08 | 2003-10-20 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Liquid crystal display |
JP4489423B2 (en) * | 2003-12-26 | 2010-06-23 | シャープ株式会社 | Backlight and liquid crystal display device |
JP4155310B2 (en) * | 2006-06-02 | 2008-09-24 | ソニー株式会社 | Backlight device, liquid crystal display device, and electronic apparatus using liquid crystal display device |
KR100790498B1 (en) * | 2006-10-12 | 2008-01-02 | 희성전자 주식회사 | Edge type backlight unit |
CN101430455A (en) * | 2007-11-07 | 2009-05-13 | 群康科技(深圳)有限公司 | Back light module unit and liquid crystal display device |
JP2010026280A (en) * | 2008-07-22 | 2010-02-04 | Hitachi Maxell Ltd | Liquid crystal display device |
TWI382247B (en) * | 2008-12-31 | 2013-01-11 | Eternal Chemical Co Ltd | Backlight module |
CN101706081B (en) * | 2009-11-11 | 2011-10-19 | 昆山龙腾光电有限公司 | Light-focusing module and backlight module |
KR20110076447A (en) * | 2009-12-29 | 2011-07-06 | 삼성전자주식회사 | Light emitting device and display device having the same |
TW201300894A (en) * | 2011-06-20 | 2013-01-01 | Au Optronics Corp | Edge lighting backlight module |
TW201321852A (en) * | 2011-11-25 | 2013-06-01 | Au Optronics Corp | Liquid crystal display device |
JP6377887B2 (en) * | 2012-02-17 | 2018-08-22 | 学校法人慶應義塾 | Liquid crystal display |
TWI479210B (en) * | 2013-01-08 | 2015-04-01 | Au Optronics Corp | Backlight module and light-guided plate |
KR102030412B1 (en) * | 2013-05-31 | 2019-10-10 | 엘지디스플레이 주식회사 | Light guide plate having rounded polyggon pattern and liquid cyrstal display device having thereof |
CN106574754B (en) * | 2014-07-29 | 2019-04-26 | 夏普株式会社 | Lighting device and display device |
US10310164B2 (en) * | 2014-12-10 | 2019-06-04 | Sharp Kabushiki Kaisha | Display backlight having lightguide with variable density light extraction elements |
JP2016122627A (en) * | 2014-12-25 | 2016-07-07 | 大日本印刷株式会社 | Surface light source device and display device |
US10241357B2 (en) * | 2014-12-29 | 2019-03-26 | Lg Display Co., Ltd. | Mould frame and liquid crystal display module having thereof |
JP6199915B2 (en) * | 2015-02-05 | 2017-09-20 | ミネベアミツミ株式会社 | Surface lighting device |
CN104713031A (en) * | 2015-03-27 | 2015-06-17 | 京东方科技集团股份有限公司 | Composite prism unit, backlight module and display device |
TWI530740B (en) * | 2015-06-17 | 2016-04-21 | 揚昇照明股份有限公司 | Surface light source module |
CN105487292A (en) * | 2016-01-15 | 2016-04-13 | 京东方科技集团股份有限公司 | Backlight module, display device and driving method thereof |
CN105892150B (en) * | 2016-06-08 | 2019-10-25 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
CN106444160B (en) * | 2016-12-20 | 2020-01-14 | 维沃移动通信有限公司 | Backlight assembly, mobile terminal and control method |
CN106950641A (en) * | 2017-05-11 | 2017-07-14 | 京东方科技集团股份有限公司 | A kind of light guide plate, optics module and the display device that is all-trans |
-
2018
- 2018-03-06 TW TW107107474A patent/TWI657277B/en active
- 2018-05-10 CN CN201810443669.6A patent/CN108646465B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1624543A (en) * | 2003-12-05 | 2005-06-08 | 阿尔卑斯电气株式会社 | Prism sheet, illuminating device, surface emitting device, and liquid crystal display device |
TW201020591A (en) * | 2008-11-20 | 2010-06-01 | Efun Technology Co Ltd | Prism sheet and anti-Newton ring prism sheet unit |
CN102109712A (en) * | 2009-12-29 | 2011-06-29 | 乐金显示有限公司 | Light shaping film and liquid crystal display device including the same |
TW201305627A (en) * | 2011-06-07 | 2013-02-01 | Sumitomo Chemical Co | Light guide plate, surface light source device, transmission-type image display device |
JP2014530455A (en) * | 2011-09-20 | 2014-11-17 | スリーエム イノベイティブプロパティズカンパニー | Backlight device |
TW201447434A (en) * | 2013-06-11 | 2014-12-16 | Au Optronics Corp | Backlight module |
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