TWI572945B - Wearable display device - Google Patents
Wearable display device Download PDFInfo
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- TWI572945B TWI572945B TW105107867A TW105107867A TWI572945B TW I572945 B TWI572945 B TW I572945B TW 105107867 A TW105107867 A TW 105107867A TW 105107867 A TW105107867 A TW 105107867A TW I572945 B TWI572945 B TW I572945B
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- light
- light guiding
- guide plate
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- 239000012788 optical film Substances 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 11
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 description 10
- 239000010408 film Substances 0.000 description 4
- 238000005401 electroluminescence Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Description
本發明是有關於一種顯示裝置，且特別是有關於一種穿戴式顯示裝置。The present invention relates to a display device, and more particularly to a wearable display device.
目前穿戴式顯示裝置主要為有機電致發光(Organic Electro-Luminescent, OEL)顯示裝置。有機電致發光顯示裝置利用有機發光二極體(Organic Light Emitting Diode, OLED)提供顯示所需之光源，因此有機電致發光顯示裝置可以不用設置背光模組。惟有機發光二極體對水氣及氧氣的耐受性(tolerance)不佳，而需採用真空設備製作。因此，目前穿戴式顯示裝置的價格普遍昂貴。At present, the wearable display device is mainly an organic electro-luminescence (OEL) display device. The organic electroluminescent display device utilizes an Organic Light Emitting Diode (OLED) to provide a light source required for display, and thus the organic electroluminescence display device can be disposed without a backlight module. However, the organic light-emitting diode has poor tolerance to moisture and oxygen, and needs to be fabricated by vacuum equipment. Therefore, the current price of wearable display devices is generally expensive.
穿戴式顯示裝置若採用背光模組提供顯示所需之光源，雖可具有價格低的優勢，但容易因區域亮度不均的問題而導致顯示品質不佳，例如鄰近光源的區域較亮而遠離光源的區域較暗以至於顯示畫面亮暗不均。是以，如何在價格的優勢下，改善區域亮度不均的問題，便成為此領域研發人員亟欲解決的問題之一。If the wearable display device uses a backlight module to provide a light source for display, although it has the advantage of low price, it is easy to display poor quality due to uneven brightness of the area, for example, the area adjacent to the light source is brighter and away from the light source. The area is darker so that the display is uneven. Therefore, how to improve the uneven brightness of the region under the advantage of price has become one of the problems that researchers in this field are eager to solve.
本發明提供一種穿戴式顯示裝置，其兼具價格優勢及顯示品質。The invention provides a wearable display device which has both price advantage and display quality.
本發明的一種穿戴式顯示裝置，其包括顯示面板、背光模組、中心轉軸以及至少一指針。背光模組與顯示面板相對且包括導光板、光源以及至少一光學膜片。導光板具有多個導光微結構。導光微結構位於導光板背對顯示面板的表面，其中導光微結構在導光板的周圍區域的密度小於導光微結構在導光板的中心區域的密度。光源包括至少一發光元件。所述至少一發光元件位於導光板的側面。所述至少一光學膜片位於導光板與顯示面板之間，其中顯示面板、導光板以及所述至少一光學膜片分別具有貫孔，且顯示面板、導光板以及所述至少一光學膜片的貫孔彼此連通而形成容置孔。中心轉軸位於容置孔中，且中心轉軸靠近顯示面板的端部凸出於容置孔。所述至少一指針與中心轉軸的端部耦接，且中心轉軸作為所述至少一指針的旋轉中心。A wearable display device of the present invention includes a display panel, a backlight module, a central rotating shaft, and at least one pointer. The backlight module is opposite to the display panel and includes a light guide plate, a light source, and at least one optical film. The light guide plate has a plurality of light guiding microstructures. The light guiding microstructure is located on a surface of the light guide plate facing away from the display panel, wherein the density of the light guiding microstructure in the surrounding area of the light guiding plate is smaller than the density of the light guiding microstructure in the central area of the light guiding plate. The light source includes at least one light emitting element. The at least one light emitting element is located at a side of the light guide plate. The at least one optical film is located between the light guide plate and the display panel, wherein the display panel, the light guide plate and the at least one optical film respectively have through holes, and the display panel, the light guide plate and the at least one optical film The through holes communicate with each other to form a receiving hole. The central rotating shaft is located in the receiving hole, and the end of the central rotating shaft near the display panel protrudes from the receiving hole. The at least one pointer is coupled to an end of the central shaft, and the central shaft serves as a center of rotation of the at least one pointer.
在本發明的一實施例中，上述的導光微結構在鄰近所述至少一發光元件的密度為每平方毫米15個至每平方毫米20個，且導光微結構在導光板的中心區域的密度為每平方毫米20個至每平方毫米25個。In an embodiment of the invention, the light guiding microstructure is adjacent to the at least one light emitting element at a density of 15 to 20 per square millimeter, and the light guiding microstructure is in a central region of the light guiding plate. The density is from 20 to 25 per square millimeter.
在本發明的一實施例中，上述的各導光微結構的最大粒徑為30微米至50微米。In an embodiment of the invention, each of the light guiding microstructures has a maximum particle diameter of 30 micrometers to 50 micrometers.
在本發明的一實施例中，上述的導光微結構是凹入於導光板的溝槽或是凸出於導光板的網點。In an embodiment of the invention, the light guiding microstructure is a groove recessed in the light guide plate or a dot protruding from the light guide plate.
在本發明的一實施例中，上述的光源更包括電路板。所述至少一發光元件配置在電路板上。背光模組更包括反射片。反射片位於導光板與電路板之間，且反射片具有至少一開口。所述至少一發光元件透過所述至少一開口而配置在導光板的側面。In an embodiment of the invention, the light source further includes a circuit board. The at least one light emitting element is disposed on the circuit board. The backlight module further includes a reflective sheet. The reflective sheet is located between the light guide plate and the circuit board, and the reflective sheet has at least one opening. The at least one light emitting element is disposed on a side surface of the light guide plate through the at least one opening.
在本發明的一實施例中，上述的背光模組更包括至少一導光條。所述至少一導光條圍繞導光板，且所述至少一導光條的兩端分別指向所述至少一發光元件。In an embodiment of the invention, the backlight module further includes at least one light guiding strip. The at least one light guiding strip surrounds the light guide plate, and two ends of the at least one light guiding strip respectively point to the at least one light emitting element.
在本發明的一實施例中，上述的導光板具有第一凸出部以及第二凸出部。第一凸出部以及第二凸出部凸出於導光板的側面，且所述至少一導光條位於第一凸出部與第二凸出部之間。In an embodiment of the invention, the light guide plate has a first protruding portion and a second protruding portion. The first protruding portion and the second protruding portion protrude from a side surface of the light guide plate, and the at least one light guiding strip is located between the first protruding portion and the second protruding portion.
在本發明的一實施例中，上述的背光模組更包括反射件。反射件包覆所述至少一導光條、第一凸出部以及第二凸出部。In an embodiment of the invention, the backlight module further includes a reflector. The reflector covers the at least one light guiding strip, the first protruding portion and the second protruding portion.
在本發明的一實施例中，上述的至少一導光條的外表面形成有反射層，且所述至少一導光條透過黏著層與導光板接合。In an embodiment of the invention, the outer surface of the at least one light guiding strip is formed with a reflective layer, and the at least one light guiding strip is bonded to the light guiding plate through the adhesive layer.
在本發明的一實施例中，上述的背光模組更包括遮光層。遮光層形成在所述至少一光學膜片的內緣。In an embodiment of the invention, the backlight module further includes a light shielding layer. A light shielding layer is formed on an inner edge of the at least one optical film.
基於上述，本發明實施例的穿戴式顯示裝置利用背光模組提供顯示所需的光源。此外，藉由導光微結構的區域密度設計提升自背光模組射出之面光源的均勻性。因此，穿戴式顯示裝置可具有低價優勢及良好的顯示品質。Based on the above, the wearable display device of the embodiment of the present invention provides a light source required for display by using a backlight module. In addition, the uniformity of the surface light source emitted from the backlight module is improved by the area density design of the light guiding microstructure. Therefore, the wearable display device can have a low price advantage and good display quality.
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。The above described features and advantages of the invention will be apparent from the following description.
圖1A是依照本發明的一實施例的一種穿戴式顯示裝置的剖面示意圖。圖1B是依照本發明的一實施例的一種穿戴式顯示裝置的爆炸圖。圖2是圖1A中光源及導光板的另一實施型態的上視示意圖。圖3是圖1A中背光膜組的另一實施型態的局部示意圖。1A is a cross-sectional view of a wearable display device in accordance with an embodiment of the present invention. 1B is an exploded view of a wearable display device in accordance with an embodiment of the present invention. 2 is a top plan view showing another embodiment of the light source and the light guide plate of FIG. 1A. 3 is a partial schematic view showing another embodiment of the backlight film group of FIG. 1A.
請先參照圖1A及圖1B，穿戴式顯示裝置10包括顯示面板12、背光模組14、中心轉軸16以及至少一指針18。背光模組14與顯示面板12相對且包括導光板141、光源142以及至少一光學膜片143。導光板141具有多個導光微結構MS。導光微結構MS位於導光板141背對顯示面板12的表面S141B，其中導光微結構MS在導光板141的周圍區域的密度小於導光微結構MS在導光板141的中心區域的密度。光源142包括至少一發光元件1421。所述至少一發光元件1421位於導光板141的側面S141S(參照圖1A)。所述至少一光學膜片143位於導光板141與顯示面板12之間，其中顯示面板12、導光板141以及所述至少一光學膜片143分別具有貫孔T1、T2、T3，且顯示面板12、導光板141以及所述至少一光學膜片143的貫孔T1、T2、T3彼此連通而形成容置孔RC。中心轉軸16位於容置孔RC中，且中心轉軸16靠近顯示面板12的端部161凸出於容置孔RC。所述至少一指針18與中心轉軸16的端部161耦接，且中心轉軸16作為所述至少一指針18的旋轉中心。舉例而言，所述至少一指針18可包括時針181及分針182，但不以此為限。Referring first to FIGS. 1A and 1B , the wearable display device 10 includes a display panel 12 , a backlight module 14 , a central rotating shaft 16 , and at least one pointer 18 . The backlight module 14 is opposite to the display panel 12 and includes a light guide plate 141, a light source 142, and at least one optical film 143. The light guide plate 141 has a plurality of light guiding microstructures MS. The light guiding microstructure MS is located on the surface S141B of the light guiding plate 141 facing away from the display panel 12, wherein the density of the light guiding microstructure MS in the peripheral region of the light guiding plate 141 is smaller than the density of the light guiding microstructure MS in the central region of the light guiding plate 141. Light source 142 includes at least one light emitting element 1421. The at least one light-emitting element 1421 is located on a side surface S141S of the light guide plate 141 (refer to FIG. 1A). The at least one optical film 143 is located between the light guide plate 141 and the display panel 12, wherein the display panel 12, the light guide plate 141, and the at least one optical film 143 have through holes T1, T2, and T3, respectively, and the display panel 12 The light guide plate 141 and the through holes T1, T2, and T3 of the at least one optical film 143 communicate with each other to form a receiving hole RC. The center shaft 16 is located in the accommodating hole RC, and the center shaft 16 is adjacent to the end portion 161 of the display panel 12 and protrudes from the accommodating hole RC. The at least one pointer 18 is coupled to the end 161 of the central shaft 16 and the central shaft 16 serves as the center of rotation of the at least one pointer 18. For example, the at least one pointer 18 can include an hour hand 181 and a minute hand 182, but is not limited thereto.
穿戴式顯示裝置10藉由顯示面板12而可具有影像顯示功能。顯示面板12可依需求而被開啟(提供影像畫面)或被關閉(未提供影像畫面)。當顯示面板12被開啟時，背光模組14中的光源142可同時被開啟，以提供顯示所需的光源。舉例而言，顯示面板12是液晶面板，但不以此為限。The wearable display device 10 can have an image display function by the display panel 12. The display panel 12 can be turned on (providing an image screen) or turned off (no image screen is provided) as needed. When the display panel 12 is turned on, the light source 142 in the backlight module 14 can be turned on at the same time to provide a light source required for display. For example, the display panel 12 is a liquid crystal panel, but is not limited thereto.
背光模組14可以是側邊入光式背光模組，以降低穿戴式顯示裝置10的整體厚度。在背光模組14中，所述至少一發光元件1421適於提供顯示所需的光束。所述至少一發光元件1421例如是發光二極體，但不以此為限。光束經由導光板141的側面S141S進入導光板141中。進入導光板141的光束藉由全反射而傳遞於導光板141中。導光微結構MS適於破壞全反射，使光束自導光板141面向顯示面板12的表面S141T射出。舉例而言，導光微結構MS可以是凹入於導光板141的溝槽(如圖1A及圖1B所示)或是凸出於導光板141的網點(未繪示)，但不以此為限。溝槽及網點的形狀及其分布可視需求調整，而不限於圖1A及圖1B所繪示者。The backlight module 14 can be a side-lit backlight module to reduce the overall thickness of the wearable display device 10. In the backlight module 14, the at least one light-emitting element 1421 is adapted to provide a light beam required for display. The at least one light-emitting element 1421 is, for example, a light-emitting diode, but is not limited thereto. The light beam enters the light guide plate 141 via the side surface S141S of the light guide plate 141. The light beam entering the light guide plate 141 is transmitted to the light guide plate 141 by total reflection. The light guiding microstructure MS is adapted to break the total reflection so that the light beam is emitted from the light guide plate 141 facing the surface S141T of the display panel 12. For example, the light guiding microstructure MS may be a groove recessed in the light guide plate 141 (as shown in FIGS. 1A and 1B ) or a dot (not shown) protruding from the light guide plate 141 , but not Limited. The shape of the grooves and dots and their distribution can be adjusted as needed, and are not limited to those shown in FIGS. 1A and 1B.
藉由導光微結構MS的區域密度設計，可調變導光板141各區域的出光量，使自背光模組14射出之面光源的亮度較為均勻。進一步而言，所述至少一發光元件1421配置在導光板141的側面S141S，因此導光板141中的光能量分布由周圍區域朝中心區域遞減。藉由使導光微結構MS在導光板141的周圍區域的密度小於導光微結構MS在導光板141的中心區域的密度，可降低周圍區域的出光量，並使大部分光束朝導光板141的中心區域傳遞且自中心區域射出導光板141。如此，有助於縮減周圍區域與中心區域的亮度差異，並提升自背光模組14射出之面光源的均勻性。By the regional density design of the light guiding microstructure MS, the amount of light emitted from each region of the light guiding plate 141 can be changed, so that the brightness of the surface light source emitted from the backlight module 14 is relatively uniform. Further, the at least one light-emitting element 1421 is disposed on the side surface S141S of the light guide plate 141, and thus the light energy distribution in the light guide plate 141 is decreased from the surrounding area toward the central area. By making the density of the light guiding microstructure MS in the peripheral region of the light guiding plate 141 smaller than the density of the light guiding microstructure MS in the central region of the light guiding plate 141, the amount of light emitted from the surrounding region can be reduced, and most of the light beam is directed toward the light guiding plate 141. The central area passes and the light guide plate 141 is ejected from the central area. In this way, it is helpful to reduce the difference in brightness between the surrounding area and the central area, and to improve the uniformity of the surface light source emitted from the backlight module 14.
在本實施例中，導光微結構MS在鄰近所述至少一發光元件1421的密度例如為每平方毫米15個至每平方毫米20個，且導光微結構MS在導光板141的中心區域的密度例如為每平方毫米20個至每平方毫米25個。此外，各導光微結構MS的最大粒徑例如為30微米至50微米。In the present embodiment, the density of the light guiding microstructure MS adjacent to the at least one light emitting element 1421 is, for example, 15 to 20 per square millimeter per square millimeter, and the light guiding microstructure MS is in the central region of the light guiding plate 141. The density is, for example, 20 per square millimeter to 25 per square millimeter. Further, the maximum particle diameter of each of the light guiding microstructures MS is, for example, 30 micrometers to 50 micrometers.
除了所述至少一發光元件1421，光源142可進一步包括電路板1422，以供電至所述至少一發光元件1421。所述至少一發光元件1421配置在電路板1422上。背光模組14可進一步包括反射片144，以藉由將射出表面S141B的光束反射回導光板141中來提升光的利用率。反射片144位於導光板141與電路板1422之間，且反射片144具有至少一開口O。所述至少一發光元件1421透過所述至少一開口O而配置在導光板141的側面S141S。除了開口O之外，反射片144還可具有貫孔T4。貫孔T4與貫孔T1、T2、T3彼此連通，以利配置中心轉軸16。In addition to the at least one light emitting element 1421, the light source 142 can further include a circuit board 1422 to supply power to the at least one light emitting element 1421. The at least one light emitting element 1421 is disposed on the circuit board 1422. The backlight module 14 may further include a reflective sheet 144 to enhance the utilization of light by reflecting the light beam exiting the surface S141B back into the light guide plate 141. The reflective sheet 144 is located between the light guide plate 141 and the circuit board 1422, and the reflective sheet 144 has at least one opening O. The at least one light-emitting element 1421 is disposed on the side surface S141S of the light guide plate 141 through the at least one opening O. In addition to the opening O, the reflection sheet 144 may have a through hole T4. The through hole T4 and the through holes T1, T2, and T3 communicate with each other to facilitate the arrangement of the center rotating shaft 16.
由於光束傳遞至導光板141的貫孔T2後會被中心轉軸16阻擋而無法傳遞至對向側，因此為避免中心轉軸16的附近產生局部暗區，本實施例設置多個發光元件1421，且發光元件1421對稱排列在導光板141的側面S141S。在本實施例中，所述至少一發光元件1421的數量是2個，但不以此為限。在其他實施例中，所述至少一發光元件1421的數量也可以是3個或3個以上。Since the light beam is transmitted to the through hole T2 of the light guide plate 141 and blocked by the central rotating shaft 16 and cannot be transmitted to the opposite side, in order to avoid the occurrence of a partial dark area in the vicinity of the central rotating shaft 16, the present embodiment provides a plurality of light emitting elements 1421, and The light emitting elements 1421 are symmetrically arranged on the side surface S141S of the light guide plate 141. In this embodiment, the number of the at least one light-emitting element 1421 is two, but not limited thereto. In other embodiments, the number of the at least one light-emitting elements 1421 may also be three or more.
在另一實施例中，如圖2所示，背光模組14也可包括至少一導光條145。所述至少一導光條145圍繞導光板141，且所述至少一導光條145的兩端分別指向所述至少一發光元件1421。導光條145可以是任何適於配置在導光板141的側面S141S且能夠導光的結構，如光纖，但不以此為限。In another embodiment, as shown in FIG. 2, the backlight module 14 can also include at least one light guiding strip 145. The at least one light guiding strip 145 surrounds the light guide plate 141 , and two ends of the at least one light guiding strip 145 are respectively directed to the at least one light emitting element 1421. The light guiding strip 145 may be any structure that is suitable for being disposed on the side surface S141S of the light guide plate 141 and capable of guiding light, such as an optical fiber, but is not limited thereto.
來自所述至少一發光元件1421的光束經由所述至少一導光條145的兩端入射進所述至少一導光條145，並可藉由全反射而傳遞於所述至少一導光條145中。在不滿足全反射條件的情況下，傳遞於所述至少一導光條145中的光束有機會射進導光板141中。換句話說，所述至少一導光條145的設置等效於在導光板141的側面S141S設置多個發光元件1421。在此架構下，可降低發光元件1421的數量，而更省電。The light beam from the at least one light-emitting element 1421 is incident on the at least one light-guiding strip 145 via the two ends of the at least one light-guiding strip 145, and can be transmitted to the at least one light-guiding strip 145 by total reflection. in. In the case where the total reflection condition is not satisfied, the light beam transmitted to the at least one light guiding strip 145 has a chance to be incident into the light guiding plate 141. In other words, the arrangement of the at least one light guiding strip 145 is equivalent to providing a plurality of light emitting elements 1421 on the side surface S141S of the light guiding plate 141. Under this architecture, the number of light-emitting elements 1421 can be reduced, and power is saved.
在又一實施例中，如圖3所示，導光板141A可具有第一凸出部P1以及第二凸出部P2。第一凸出部P1以及第二凸出部P2凸出於導光板141A的側面S141AS，且所述至少一導光條145位於第一凸出部P1與第二凸出部P2之間。在本實施例中，背光模組14可進一步包括反射件146。反射件146包覆所述至少一導光條145、第一凸出部P1以及第二凸出部P2，以藉由將射出所述至少一導光條145的光束朝導光板141A反射來提升光的利用率。在另一實施例中，所述至少一導光條145的外表面可形成有反射層，且所述至少一導光條145可透過黏著層(未繪示)與導光板141A接合。如此，可省略反射件146的設置。形成反射層的方法可以是鍍金屬膜或是塗佈反射塗料，但不以此為限。In still another embodiment, as shown in FIG. 3, the light guide plate 141A may have a first protrusion P1 and a second protrusion P2. The first protruding portion P1 and the second protruding portion P2 protrude from the side surface S141AS of the light guide plate 141A, and the at least one light guiding strip 145 is located between the first protruding portion P1 and the second protruding portion P2. In this embodiment, the backlight module 14 may further include a reflective member 146. The reflector 146 covers the at least one light guiding strip 145, the first protruding portion P1 and the second protruding portion P2 to be lifted by reflecting the light beam emitted from the at least one light guiding strip 145 toward the light guiding plate 141A. Light utilization. In another embodiment, the outer surface of the at least one light guiding strip 145 may be formed with a reflective layer, and the at least one light guiding strip 145 may be bonded to the light guiding plate 141A through an adhesive layer (not shown). As such, the arrangement of the reflectors 146 can be omitted. The method of forming the reflective layer may be a metallized film or a reflective coating, but is not limited thereto.
請再參照圖1A及圖1B，所述至少一光學膜片143適於改變光能量分布或進一步提升面光源的均勻性。舉例而言，所述至少一光學膜片143可包括第一擴散片1431、第一稜鏡片1432、第二稜鏡片1433以及第二擴散片1434，其中第一擴散片1431以及第二擴散片1434適於提升面光源的均勻性，而第一稜鏡片1432以及第二稜鏡片1433適於提供集光增亮的效果。第一擴散片1431、第一稜鏡片1432、第二稜鏡片1433以及第二擴散片1434例如依序堆疊在導光板141與顯示面板12之間，然而，所述至少一光學膜片143的數量及種類不限於上述。Referring again to FIGS. 1A and 1B, the at least one optical film 143 is adapted to change the light energy distribution or further enhance the uniformity of the surface light source. For example, the at least one optical film 143 may include a first diffusion sheet 1431, a first cymbal sheet 1432, a second cymbal sheet 1433, and a second diffusion sheet 1434, wherein the first diffusion sheet 1431 and the second diffusion sheet 1434 It is suitable for improving the uniformity of the surface light source, and the first cymbal sheet 1432 and the second cymbal sheet 1433 are adapted to provide the effect of collecting light. The first diffusion sheet 1431, the first cymbal sheet 1432, the second cymbal sheet 1433, and the second diffusion sheet 1434 are sequentially stacked between the light guide plate 141 and the display panel 12, for example, however, the number of the at least one optical film 143 And the type is not limited to the above.
在一實施例中，為避免傳遞至貫孔T2的光束在容置孔RC形成亮紋而影響穿戴式顯示裝置10的視覺效果，背光模組14可進一步包括遮光層(未繪示)。遮光層可以形成在所述至少一光學膜片143的內緣。舉例而言，遮光層可以形成在最頂層的光學膜片143(如第二擴散片1434)的內緣或是形成在最底層的光學膜片143(如第一擴散片1431)的內緣，但不以此為限。此外，遮光層可以是蓋套、遮光的膠帶或塗料等。In an embodiment, in order to prevent the light beam transmitted to the through hole T2 from forming a bright line on the receiving hole RC to affect the visual effect of the wearable display device 10, the backlight module 14 may further include a light shielding layer (not shown). A light shielding layer may be formed on an inner edge of the at least one optical film 143. For example, the light shielding layer may be formed on the inner edge of the topmost optical film 143 (such as the second diffusion sheet 1434) or on the inner edge of the lowermost optical film 143 (such as the first diffusion sheet 1431). But not limited to this. Further, the light shielding layer may be a cover, a light-shielding tape or a paint or the like.
綜上所述，本發明實施例的穿戴式顯示裝置利用背光模組提供顯示所需的光源。此外，藉由導光微結構的區域密度設計提升背光模組出光的均勻性。因此，穿戴式顯示裝置可具有低價優勢及良好的顯示品質。在一實施例中，背光模組還可藉由光纖的設置來降低發光元件的數量並達到省電的訴求。In summary, the wearable display device of the embodiment of the present invention provides a light source required for display by using a backlight module. In addition, the uniformity of the light output of the backlight module is improved by the area density design of the light guiding microstructure. Therefore, the wearable display device can have a low price advantage and good display quality. In an embodiment, the backlight module can also reduce the number of light-emitting elements and achieve power saving by the arrangement of the optical fibers.
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 in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
10‧‧‧穿戴式顯示裝置10‧‧‧Wearing display device
12‧‧‧顯示面板12‧‧‧ display panel
14‧‧‧背光模組14‧‧‧Backlight module
16‧‧‧中心轉軸16‧‧‧ center shaft
18‧‧‧指針18‧‧‧ pointer
141、141A‧‧‧導光板141, 141A‧‧‧ light guide
142‧‧‧光源142‧‧‧Light source
143‧‧‧光學膜片143‧‧‧Optical diaphragm
144‧‧‧反射片144‧‧‧reflector
145‧‧‧導光條145‧‧‧Light guide strip
146‧‧‧反射件146‧‧‧reflector
161‧‧‧端部161‧‧‧End
181‧‧‧時針181‧‧ hours
182‧‧‧分針182‧‧ ‧ minute hand
1421‧‧‧發光元件1421‧‧‧Lighting elements
1422‧‧‧電路板1422‧‧‧Circuit board
1431‧‧‧第一擴散片1431‧‧‧First diffuser
1432‧‧‧第一稜鏡片1432‧‧‧ first picture
1433‧‧‧第二稜鏡片1433‧‧‧ second picture
1434‧‧‧第二擴散片1434‧‧‧Second diffusion film
MS‧‧‧導光微結構MS‧‧‧Light Guide Microstructure
O‧‧‧開口O‧‧‧ openings
P1‧‧‧第一凸出部P1‧‧‧First bulge
P2‧‧‧第二凸出部P2‧‧‧second bulge
RC‧‧‧容置孔RC‧‧‧ accommodating holes
S141B、S141T‧‧‧表面S141B, S141T‧‧‧ surface
S141S、S141AS‧‧‧側面S141S, S141AS‧‧‧ side
T1、T2、T3、T4‧‧‧貫孔T1, T2, T3, T4‧‧‧ through holes
圖1A是依照本發明的一實施例的一種穿戴式顯示裝置的剖面示意圖。 圖1B是依照本發明的一實施例的一種穿戴式顯示裝置的爆炸圖。 圖2是圖1A中光源及導光板的另一實施型態的上視示意圖。 圖3是圖1A中背光膜組的另一實施型態的局部示意圖。1A is a cross-sectional view of a wearable display device in accordance with an embodiment of the present invention. 1B is an exploded view of a wearable display device in accordance with an embodiment of the present invention. 2 is a top plan view showing another embodiment of the light source and the light guide plate of FIG. 1A. 3 is a partial schematic view showing another embodiment of the backlight film group of FIG. 1A.
10‧‧‧穿戴式顯示裝置 10‧‧‧Wearing display device
12‧‧‧顯示面板 12‧‧‧ display panel
14‧‧‧背光模組 14‧‧‧Backlight module
16‧‧‧中心轉軸 16‧‧‧ center shaft
18‧‧‧指針 18‧‧‧ pointer
141‧‧‧導光板 141‧‧‧Light guide plate
142‧‧‧光源 142‧‧‧Light source
143‧‧‧光學膜片 143‧‧‧Optical diaphragm
144‧‧‧反射片 144‧‧‧reflector
161‧‧‧端部 161‧‧‧End
181‧‧‧時針 181‧‧ hours
182‧‧‧分針 182‧‧ ‧ minute hand
1421‧‧‧發光元件 1421‧‧‧Lighting elements
1422‧‧‧電路板 1422‧‧‧Circuit board
1431‧‧‧第一擴散片 1431‧‧‧First diffuser
1432‧‧‧第一稜鏡片 1432‧‧‧ first picture
1433‧‧‧第二稜鏡片 1433‧‧‧ second picture
1434‧‧‧第二擴散片 1434‧‧‧Second diffusion film
MS‧‧‧導光微結構 MS‧‧‧Light Guide Microstructure
RC‧‧‧容置孔 RC‧‧‧ accommodating holes
S141B、S141T‧‧‧表面 S141B, S141T‧‧‧ surface
S141S‧‧‧側面 S141S‧‧‧ side
Claims (8)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| TW105107867A TWI572945B (en) | 2016-03-15 | 2016-03-15 | Wearable display device |
| CN201710090351.XA CN107193155A (en) | 2016-03-15 | 2017-02-20 | Wearable display device |
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|---|---|---|---|
| TW105107867A TWI572945B (en) | 2016-03-15 | 2016-03-15 | Wearable display device |
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| TWI572945B true TWI572945B (en) | 2017-03-01 |
| TW201732387A TW201732387A (en) | 2017-09-16 |
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| CN112684629B (en) * | 2019-10-17 | 2023-05-23 | 京东方科技集团股份有限公司 | Display module, manufacturing method thereof and display device |
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| CN109254345A (en) * | 2018-11-19 | 2019-01-22 | 京东方科技集团股份有限公司 | Light guide plate and preparation method thereof, backlight module, display module and terminal |
| CN109254345B (en) * | 2018-11-19 | 2020-04-21 | 京东方科技集团股份有限公司 | Light guide plate and manufacturing method thereof, backlight module, display module and terminal |
| US11086067B2 (en) | 2018-11-19 | 2021-08-10 | Beijing Boe Optoelectronics Technology Co., Ltd | Display backlight module having light guide plate with through hole and embedded optic fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201732387A (en) | 2017-09-16 |
| CN107193155A (en) | 2017-09-22 |
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| MM4A | Annulment or lapse of patent due to non-payment of fees |