TWI537612B - Display apparatus with symmetric diffusion film - Google Patents
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Description
本發明是有關於一種具有一對稱擴散膜的顯示裝置，且特別是有關於一種具有一觸控面板和一對稱擴散膜的顯示裝置，使光線具有均勻的亮度分佈。 The present invention relates to a display device having a symmetric diffusion film, and more particularly to a display device having a touch panel and a symmetric diffusion film to provide a uniform brightness distribution of light.
觸控面板已被廣泛地應用在電子產品上，例如手持式電子產品(手機、個人數位助理...等等)或是平板電腦等許多相關產品，以做為輸入裝置方便使用者與之進行互動。觸控面板是一具有觸控感測器的電子顯示面板，當觸碰發生時可偵測在觸碰感知區域內或顯示區域內的觸碰位置。一般可透過手指、手或一物件如觸控筆來進行面板觸控。 Touch panels have been widely used in electronic products, such as handheld electronic products (mobile phones, personal digital assistants, etc.) or many related products such as tablets, as an input device for users to carry out with them. interactive. The touch panel is an electronic display panel with a touch sensor that can detect a touch position in the touch sensing area or in the display area when a touch occurs. Panel touch is generally possible by finger, hand or an object such as a stylus.
觸控感測技術中四種最常見的技術包括電阻式(resistive)觸控、紅外線(infrared)觸控、電容式(capacitive)觸控與表面聲波式(SAW，surface acoustic wave)觸控。每一種技術都存在有它獨特的優點也有缺點。電阻式和電容式觸控感測技術由於其良好可靠度而有最廣泛的應用。電容式觸控感測技術具有僅需 微小的觸碰力道且能支持多點觸控的優點，而使用電阻式觸控感測技術的電阻式觸控面板則無法得知同時多點觸碰發生時的該些位置。然而，由於製造過程中需要多道光學微影步驟，電容式觸控感測顯示面板的成本高，再者電容式觸控感測器偵測和決定多點觸碰位置的技術也很複雜。 The four most common technologies in touch sensing technology include resistive touch, infrared touch, capacitive touch and surface acoustic wave (SAW) touch. Each technology has its own unique advantages and disadvantages. Resistive and capacitive touch sensing technologies have the widest range of applications due to their good reliability. Capacitive touch sensing technology has only needed The small touch force can support the advantages of multi-touch, and the resistive touch panel using the resistive touch sensing technology cannot know the positions when multiple touches occur at the same time. However, due to the need for multiple optical lithography steps in the manufacturing process, the cost of the capacitive touch sensing display panel is high, and the technique of detecting and determining the multi-touch position by the capacitive touch sensor is also complicated.
對觸控面板而言，依據將觸控感測器整合至顯示面板的位置區分，可分為三種：內嵌式觸控(In-Cell touch)、表面式(On-Cell touch)和外掛式(Out-Cell touch)。一內嵌式觸控顯示裝置是將觸控感測器物理式地整合至顯示單元(display cell)(如LCD顯示單元)裡，而觸控感測器可以是光學感測元件(light-sensing elements)(光學感測)、微動開關(micro-switches)(電壓感測)和電容電極(capacitive electrodes)(電荷感測)。一表面式觸控顯示裝置是將觸控感測器加在一彩色濾光片基板的上表層，例如，一X-Y陣列之導體(如ITO或金屬)設置在彩色濾光片基板的頂表面或底表面。一外掛式觸控顯示裝置是在沒有觸控功能的顯示面板(如LCD)外部再直接層疊一觸控感測器。 For the touch panel, it can be divided into three types according to the position where the touch sensor is integrated into the display panel: In-Cell touch, On-Cell touch, and plug-in (Out-Cell touch). An in-cell touch display device physically integrates the touch sensor into a display cell (such as an LCD display unit), and the touch sensor can be an optical sensing component (light-sensing) Elements) (optical sensing), micro-switches (voltage sensing) and capacitive electrodes (charge sensing). A surface touch display device is provided with a touch sensor applied to an upper surface of a color filter substrate. For example, an XY array conductor (such as ITO or metal) is disposed on the top surface of the color filter substrate or Bottom surface. An external touch display device directly stacks a touch sensor outside a display panel (such as an LCD) without a touch function.
以內嵌式和表面式整合方式之觸控為例，其觸控感測器之一或多層感測電極可設置在一彩色濾光片基板上。第1圖係繪示一傳統觸控面板，其具有一觸控感測器整合至一顯示面板之示意圖。如第1圖所示，一顯示面板包括一薄膜電晶體(TFT)玻璃基板11、一彩色濾光片(CF)玻璃基板13、設置於TFT玻璃基板11和CF玻璃基板13之間的一液晶層15、和位於TFT玻璃 基板11下方之一背光模組17以朝前方發出光線。一黑色矩陣層(black matrix layer)133(如線寬大約6μm)可更形成於CF玻璃基板13之內側。第1圖所示之觸控面板包括位於CF玻璃基板13上的觸控感測器，觸控感測器例如是感測電極19(如金屬電極，線寬小於6μm)且對應黑色矩陣層133。由於CF玻璃基板13厚度(如約0.2mm)的視差效應(parallax effect)和感測電極19阻擋光線的影響，從離軸(off-axis)之側視角度觀看觸控面板時會出現亮度分佈缺陷(luminance distribution mura)。 For example, in the touch-integrated and surface-integrated touch, one or more of the touch sensors may be disposed on a color filter substrate. FIG. 1 is a schematic view showing a conventional touch panel having a touch sensor integrated into a display panel. As shown in FIG. 1 , a display panel includes a thin film transistor (TFT) glass substrate 11 , a color filter (CF) glass substrate 13 , and a liquid crystal disposed between the TFT glass substrate 11 and the CF glass substrate 13 . Layer 15, and located in the TFT glass A backlight module 17 below the substrate 11 emits light toward the front. A black matrix layer 133 (e.g., a line width of about 6 μm) may be formed on the inner side of the CF glass substrate 13. The touch panel shown in FIG. 1 includes a touch sensor on the CF glass substrate 13. The touch sensor is, for example, a sensing electrode 19 (such as a metal electrode having a line width of less than 6 μm) and corresponding to the black matrix layer 133. . Due to the parallax effect of the thickness of the CF glass substrate 13 (e.g., about 0.2 mm) and the effect of the sensing electrode 19 blocking light, a luminance distribution occurs when the touch panel is viewed from a side view angle off-axis. Luminance distribution mura.
第2圖係為第1圖之傳統觸控面板(具有顯示面板和觸控感測器)和一般顯示面板的亮度分佈模擬結果。對不具觸控感測器的顯示面板來說，亮度分佈是呈現一平滑曲線(smooth curve)，且亮度隨視角(Theta；對垂直軸之角度)增加而下降。雖然如第1圖所示之傳統觸控面板在亮度分佈上也和一般顯示面板有類似趨勢，但由於感測電極19和黑色矩陣層133的干擾，使其亮度分佈呈現一不平滑曲線(uneven curve)；因此當從離軸角度觀看如第1圖所示之觸控面板時會看到亮度分佈缺陷。 2 is a simulation result of luminance distribution of a conventional touch panel (having a display panel and a touch sensor) of FIG. 1 and a general display panel. For a display panel without a touch sensor, the brightness distribution exhibits a smooth curve, and the brightness decreases as the viewing angle (Theta; the angle to the vertical axis) increases. Although the conventional touch panel as shown in FIG. 1 has a similar trend in luminance distribution as the general display panel, the luminance distribution of the sensing electrode 19 and the black matrix layer 133 exhibits an uneven curve (uneven). Curve); therefore, when viewing the touch panel as shown in Fig. 1 from an off-axis angle, a luminance distribution defect is seen.
本發明係有關於一種具有對稱擴散膜(symmetric diffusion film，SDF)的顯示裝置。實施例之具有觸控感測器的一顯示裝置係利用對稱擴散膜解決亮度分佈缺陷(luminance distribution mura)的問題，進而大幅改善呈現在顯示裝置上的影像 品質。 The present invention relates to a display device having a symmetric diffusion film (SDF). A display device with a touch sensor of the embodiment solves the problem of luminance distribution mura by using a symmetric diffusion film, thereby greatly improving the image presented on the display device. quality.
根據本發明，係提出一種顯示裝置，至少包括一觸控面板和一對稱擴散膜設置在觸控面板上，對稱擴散膜至少包括兩種不同物質，包括一第一物質和一第二物質，且第一物質具有一第一折射率，第二物質具有一第二折射率，其中第一折射率不等於第二折射率。在一實施例中，顯示裝置更包括一背光模組設置在觸控面板下方，用以發出光線通過觸控面板和對稱擴散膜。 According to the present invention, there is provided a display device comprising at least one touch panel and a symmetric diffusion film disposed on the touch panel, the symmetric diffusion film comprising at least two different substances, including a first substance and a second substance, and The first substance has a first index of refraction and the second substance has a second index of refraction, wherein the first index of refraction is not equal to the second index of refraction. In one embodiment, the display device further includes a backlight module disposed under the touch panel for emitting light through the touch panel and the symmetric diffusion film.
為了對本發明之上述及其他方面有更佳的瞭解，下文特舉實施例，並配合所附圖式，作詳細說明如下： In order to provide a better understanding of the above and other aspects of the present invention, the following detailed description of the embodiments and the accompanying drawings
11、801‧‧‧TFT玻璃基板 11, 801‧‧‧ TFT glass substrate
13、803‧‧‧CF玻璃基板 13, 803‧‧‧CF glass substrate
133、BM‧‧‧黑色矩陣層 133, BM‧‧‧ black matrix layer
15、802‧‧‧液晶層 15, 802‧‧‧ liquid crystal layer
17、312、612、82‧‧‧背光模組 17, 312, 612, 82‧‧‧ backlight module
19‧‧‧感測電極 19‧‧‧Sensor electrode
50、317、617、806‧‧‧對稱擴散膜 50, 317, 617, 806‧‧ symmetrical diffusion film
8、31、31’、61、61’‧‧‧顯示裝置 8, 31, 31', 61, 61' ‧ ‧ display devices
311、611‧‧‧觸控面板 311, 611‧‧‧ touch panel
314、614‧‧‧上偏光板 314, 614‧‧‧Upper polarizer
315、615‧‧‧下偏光板 315, 615‧‧‧ lower polarizing plate
501‧‧‧第一物質 501‧‧‧First substance
502‧‧‧第二物質 502‧‧‧Second substance
503‧‧‧第三物質 503‧‧‧ Third substance
80‧‧‧顯示模組 80‧‧‧ display module
n1‧‧‧第一折射率 N1‧‧‧first refractive index
n2‧‧‧第二折射率 N2‧‧‧second refractive index
n3‧‧‧第三折射率 N3‧‧‧third refractive index
SE‧‧‧感測電極層 SE‧‧‧Sensing electrode layer
91‧‧‧第一電極 91‧‧‧First electrode
92‧‧‧第二電極 92‧‧‧second electrode
第1圖係繪示一傳統觸控面板，其具有一觸控感測器整合至一顯示面板之示意圖。 FIG. 1 is a schematic view showing a conventional touch panel having a touch sensor integrated into a display panel.
第2圖係為第1圖之傳統觸控面板(具有顯示面板和觸控感測器)和一般顯示面板的亮度分佈模擬結果。 2 is a simulation result of luminance distribution of a conventional touch panel (having a display panel and a touch sensor) of FIG. 1 and a general display panel.
第3A圖和第3B圖係繪示本揭露第一實施例之兩種顯示裝置之示意圖。 3A and 3B are schematic views showing two display devices of the first embodiment of the present disclosure.
第4圖係為一傳統觸控面板和第一實施例之一顯示裝置的亮度分佈模擬結果。 Fig. 4 is a simulation result of luminance distribution of a conventional touch panel and a display device of the first embodiment.
第5圖係繪示本揭露第一實施例之一對稱擴散膜之示意圖。 Figure 5 is a schematic view showing a symmetric diffusion film of the first embodiment of the present disclosure.
第6A圖和第6B圖係繪示本揭露第二實施例之兩種顯示裝 置之示意圖。 6A and 6B illustrate two display devices of the second embodiment of the present disclosure. Schematic diagram.
第7圖係顯示自本揭露第二實施例之一顯示裝置的背光模組發出之一準直光，其正常化光強度對視角之關係圖。 Figure 7 is a diagram showing the relationship between normalized light intensity and viewing angle of a collimated light emitted from a backlight module of a display device according to a second embodiment of the present disclosure.
第8圖係顯示一傳統背光模組和第二實施例之背光模組，其光線之正常化光強度對視角之關係圖。 Figure 8 is a diagram showing the relationship between the normalized light intensity of the light and the viewing angle of a conventional backlight module and the backlight module of the second embodiment.
第9圖係為一傳統觸控面板和第二實施例之一顯示裝置的亮度分佈模擬結果。 Figure 9 is a simulation result of luminance distribution of a conventional touch panel and a display device of the second embodiment.
第10A圖顯示一傳統觸控面板(沒有對稱擴散膜和準直光背光模組)的等亮度圖。 Figure 10A shows an isometric view of a conventional touch panel (without a symmetric diffuser film and a collimated light backlight module).
第10B圖顯示一第一實施例之觸控面板(有對稱擴散膜和一般背光模組)的等亮度圖。 FIG. 10B shows an equal-luminance diagram of the touch panel (the symmetric diffusion film and the general backlight module) of the first embodiment.
第10C圖顯示一第二實施例之觸控面板(有對稱擴散膜和準直光背光模組)的等亮度圖。 FIG. 10C shows an isometric view of a touch panel (a symmetric diffusion film and a collimated light backlight module) of a second embodiment.
第11A圖繪示本揭露一實施例之具感測電極之一顯示裝置之示意圖。 FIG. 11A is a schematic diagram showing a display device with a sensing electrode according to an embodiment of the present disclosure.
第11B圖繪示本揭露一實施例之觸控感測器之一電極圖案之示意圖。 FIG. 11B is a schematic diagram showing an electrode pattern of a touch sensor according to an embodiment of the present disclosure.
本揭露之實施例係提出一種具有一對稱擴散膜(symmetric diffusion film,SDF)的顯示裝置，特別是有關於一種應用對稱擴散膜之具觸控感測器之顯示裝置。實施例之一具有觸控 感測器的顯示裝置，例如液晶顯示器(LCD)、有機電激發光顯示器(OLED)或其他型態的顯示裝置，係利用一對稱擴散膜以使相對於視角之亮度分佈曲線呈現一平滑曲線。實施例之顯示裝置係具有簡單結構且可以低價成本製造。因此實施例之顯示裝置適合大量生產。實施例之顯示裝置解決了從離軸角度觀看傳統觸控面板時會產生的亮度分佈缺陷(luminance distribution mura)的問題。因此實施例中之顯示裝置在影像呈現品質上有大幅的進步。再者，實施例中之顯示裝置不需要設置補償膜來消除亮度分佈缺陷。在另一實施例中，可採用一準直光(collimated light)以增加顯示裝置之亮度。 The embodiments of the present disclosure propose a display device having a symmetric diffusion film (SDF), and more particularly to a display device with a touch sensor using a symmetric diffusion film. One of the embodiments has touch A display device of a sensor, such as a liquid crystal display (LCD), an organic electroluminescent display (OLED), or other type of display device, utilizes a symmetric diffusion film to present a smooth curve with respect to a brightness profile of the viewing angle. The display device of the embodiment has a simple structure and can be manufactured at low cost. Therefore, the display device of the embodiment is suitable for mass production. The display device of the embodiment solves the problem of luminance distribution mura which may occur when viewing a conventional touch panel from an off-axis angle. Therefore, the display device in the embodiment has a great progress in image rendering quality. Furthermore, the display device in the embodiment does not need to provide a compensation film to eliminate luminance distribution defects. In another embodiment, a collimated light can be employed to increase the brightness of the display device.
實施例中之具觸控感測器的顯示裝置可被廣泛的應用在許多顯示裝置，例如穿透式(transmissive)、反射式(reflective)，半穿透半反射式(transflective)等液晶顯示器、有機電激發光顯示器以及其它顯示器。也適用於多種不同型態的觸控感測器，例如內嵌式(In-Cell)、表面式(On-Cell)和外掛式(Out-Cell)觸控感測器。 The touch sensor-equipped display device in the embodiment can be widely applied to many display devices, such as transmissive, reflective, transflective liquid crystal displays, Organic electroluminescent displays and other displays. It is also suitable for a variety of different types of touch sensors, such as in-cell (In-Cell), surface (On-Cell) and out-cell (Out-Cell) touch sensors.
以下係參照所附圖式詳細敘述一些實施態樣。需注意的是，實施例所提出的結構和內容僅為舉例說明之用，本揭露欲保護之範圍並非僅限於所述之該些態樣。本揭露並非顯示出所有可能的實施例。本揭露之多種實施例可以在許多不同型態之顯示裝置中實施(例如不同的顯示面板和觸控感測器型態，不同的觸控感測器整合方式)，因此，說明書和圖示內容僅作敘述實施例之 用，而非作為限縮本揭露保護範圍之用。相關領域者可在不脫離本揭露之精神和範圍內對實施例加以變化與修飾，以符合實際應用所需。 Some embodiments will be described in detail below with reference to the accompanying drawings. It is to be noted that the structures and contents of the embodiments are merely illustrative, and the scope of the disclosure is not limited to the described aspects. This disclosure does not show all possible embodiments. The various embodiments of the present disclosure can be implemented in many different types of display devices (for example, different display panels and touch sensor types, different touch sensor integration methods), therefore, the description and the illustration content Only for the description of the embodiments Use, rather than as a limit, to disclose the scope of protection. The embodiments may be modified and modified to meet the needs of the actual application without departing from the spirit and scope of the disclosure.
第3A圖和第3B圖係繪示本揭露第一實施例之兩種顯示裝置之示意圖。在第一實施例中，係簡單繪示穿透式液晶顯示器做實施例說明。 3A and 3B are schematic views showing two display devices of the first embodiment of the present disclosure. In the first embodiment, a transmissive liquid crystal display is simply illustrated as an embodiment.
第一實施例之顯示裝置31或31’包括一觸控面板(touchscreen)311、一背光模組(backlight module)312設置在觸控面板311下方以提供光線至觸控面板311、一上偏光板314、一下偏光板315、和一對稱擴散膜(SDF)317設置在上偏光板314之一側。觸控面板311設置在上偏光板314和下偏光板315之間。且上偏光板314和下偏光板315係相互正交以提供一正交偏振效果(cross-polarization effect)。顯示裝置31或31’結構上的差異是在於對稱擴散膜(SDF)317的位置(即設置在上偏光板314的上方或下方)。第3A圖中，對稱擴散膜317係設置在上偏光板314的上方(即前方)。第3B圖中，對稱擴散膜317係設置在上偏光板314的後方，並位於上偏光板314和觸控面板311之間。第3A圖中，光線自背光模組312發出後通過下偏光板315、觸控面板311、上偏光板314、和被對稱擴散膜317散射。第3B圖中，光線自背光模組312發出後通過下偏光板315、觸控面板311、被對稱擴散膜317散射、和通過上偏光板314。 The display device 31 or 31 ′ of the first embodiment includes a touch screen 311 and a backlight module 312 disposed under the touch panel 311 to provide light to the touch panel 311 and an upper polarizing plate. 314. The lower polarizing plate 315 and a symmetric diffusion film (SDF) 317 are disposed on one side of the upper polarizing plate 314. The touch panel 311 is disposed between the upper polarizing plate 314 and the lower polarizing plate 315. And the upper polarizing plate 314 and the lower polarizing plate 315 are orthogonal to each other to provide a cross-polarization effect. The difference in structure of the display device 31 or 31' is in the position of the symmetric diffusion film (SDF) 317 (i.e., disposed above or below the upper polarizing plate 314). In FIG. 3A, the symmetric diffusion film 317 is disposed above (ie, in front of) the upper polarizing plate 314. In FIG. 3B , the symmetric diffusion film 317 is disposed behind the upper polarizing plate 314 and between the upper polarizing plate 314 and the touch panel 311 . In FIG. 3A, the light is emitted from the backlight module 312 and then scattered by the lower polarizing plate 315, the touch panel 311, the upper polarizing plate 314, and the symmetric diffusion film 317. In FIG. 3B , the light is emitted from the backlight module 312 , passes through the lower polarizing plate 315 , the touch panel 311 , is scattered by the symmetric diffusion film 317 , and passes through the upper polarizing plate 314 .
第4圖係為一傳統觸控面板和第一實施例之一顯示裝置的亮度分佈模擬結果。在模擬實驗中，是結合觸控面板與對稱擴散膜作為實施例之一顯示裝置。傳統觸控面板和第一實施例之顯示裝置(具有對稱擴散膜和觸控面板)都採用相同的背光模組。兩者的亮度分佈曲線顯示類似的趨勢-亮度隨視角(Theta；對垂直軸之角度)增加而下降。然而，傳統觸控面板的亮度分佈曲線是不平滑的，實施例之顯示裝置則呈現平滑的亮度分佈曲線，如第4圖所示。當觀看者觀看傳統觸控面板，在離軸角度會看到亮度分佈缺陷。根據第一實施例，具有觸控面板和對稱擴散膜的顯示裝置，觀看時則沒有出現亮度分佈缺陷。因此，根據第一實施例所提出之顯示裝置，其顯示品質大幅提升。 Fig. 4 is a simulation result of luminance distribution of a conventional touch panel and a display device of the first embodiment. In the simulation experiment, a touch panel and a symmetric diffusion film are combined as one display device of the embodiment. The conventional touch panel and the display device of the first embodiment (having a symmetric diffusion film and a touch panel) all use the same backlight module. The brightness distribution curves of the two show a similar trend - the brightness decreases as the viewing angle (Theta; the angle to the vertical axis) increases. However, the brightness distribution curve of the conventional touch panel is not smooth, and the display device of the embodiment exhibits a smooth brightness distribution curve as shown in FIG. When a viewer views a conventional touch panel, a brightness distribution defect is seen at an off-axis angle. According to the first embodiment, the display device having the touch panel and the symmetric diffusion film does not exhibit a luminance distribution defect when viewed. Therefore, according to the display device proposed in the first embodiment, the display quality is greatly improved.
根據一實施例，對稱擴散膜至少包括兩種不同物質，包括一第一物質(first material)和一第二物質(second material)混合，且第一物質具有一第一折射率n1，第二物質具有一第二折射率，第一折射率不等於第二折射率n2。一實施例中，第一折射率n1和第二折射率n2之差值係大於0而不大於0.1。第二物質例如是複數個粒子並散佈在第一物質中，第二物質之粒徑尺寸例如是在0.1μm到10μm範圍。 According to an embodiment, the symmetric diffusion film comprises at least two different substances, including a first material and a second material, and the first substance has a first refractive index n1, the second substance There is a second refractive index, and the first refractive index is not equal to the second refractive index n2. In one embodiment, the difference between the first index of refraction n1 and the second index of refraction n2 is greater than zero and not greater than 0.1. The second substance is, for example, a plurality of particles and is dispersed in the first substance, and the particle size of the second substance is, for example, in the range of 0.1 μm to 10 μm.
第5圖係繪示本揭露第一實施例之一對稱擴散膜之示意圖。第5圖中之對稱擴散膜50包括3種不同物質，包括第一物質501、第二物質502、第三物質503，分別具有第一折射率n1、第二折射率n2、第三折射率n3。第三折射率n3和第一折射 率n1及第二折射率n2並不相同。第二物質502和第三物質503可以是粒子型態般散佈在第一物質501中，第三折射率n3和第二折射率n2之差，或者是第三折射率n3和第一折射率n1之差皆不大於0.1。一實施例中，第三物質503之粒徑尺寸例如是0.1μm到10μm之間。一實施例中，對稱擴散膜50之各材料的折射率例如是：n1=1.6，n2=1.5，n3=1.5，和n1=1.6，n2=1.5，n3=1.4。 Figure 5 is a schematic view showing a symmetric diffusion film of the first embodiment of the present disclosure. The symmetric diffusion film 50 in FIG. 5 includes three different substances, including a first substance 501, a second substance 502, and a third substance 503, respectively having a first refractive index n1, a second refractive index n2, and a third refractive index n3. . Third refractive index n3 and first refraction The rate n1 and the second index of refraction n2 are not the same. The second substance 502 and the third substance 503 may be dispersed in the first substance 501 in a particle form, the difference between the third refractive index n3 and the second refractive index n2, or the third refractive index n3 and the first refractive index n1 The difference is no more than 0.1. In one embodiment, the third material 503 has a particle size of, for example, between 0.1 μm and 10 μm. In one embodiment, the refractive indices of the materials of the symmetric diffusion film 50 are, for example, n1 = 1.6, n2 = 1.5, n3 = 1.5, and n1 = 1.6, n2 = 1.5, and n3 = 1.4.
在一實施例中，第一物質501可以是有機材料，例如膠水、黏著劑或是樹脂(例如聚對苯二甲酸乙二酯，PET)。第二物質502和第三物質503之組成可分別獨立的自無機材料(例如矽氧玻璃SiOx、矽氮玻璃SiNx)，和透明導電材料(例如銦錫氧化物(ITO)、銦鋁鋅氧化物(IAZO)、銦鎵鋅氧化物(GZO))中選擇。再者，實施例之對稱擴散膜50之厚度例如是在20μm到200μm之間，然本發明並不限定於此。 In one embodiment, the first substance 501 can be an organic material such as glue, an adhesive, or a resin (eg, polyethylene terephthalate, PET). The composition of the second substance 502 and the third substance 503 can be independent of inorganic materials (for example, xenon glass SiOx, bismuth nitride glass SiNx), and transparent conductive materials (such as indium tin oxide (ITO), indium aluminum zinc oxide. (IAZO), indium gallium zinc oxide (GZO)). Further, the thickness of the symmetric diffusion film 50 of the embodiment is, for example, between 20 μm and 200 μm, but the present invention is not limited thereto.
在一實施例中，對稱擴散膜50之一霧度(haze)係介於約50%到95%之範圍，例如約50%。光線通過對稱擴散膜50會被散射。在一實施例中，被對稱擴散膜50散射的光線至少50%是介於±2度±10度的範圍(對稱擴散膜之半高寬值HWHM)。 In one embodiment, one of the symmetric diffusion films 50 has a haze ranging from about 50% to 95%, such as about 50%. Light is scattered through the symmetric diffusion film 50. In one embodiment, at least 50% of the light scattered by the symmetric diffusion film 50 is in the range of ±2 degrees ± 10 degrees (the full width at half maximum HWHM of the symmetric diffusion film).
多種不同製造方法皆可用來製造對稱擴散膜，並不以實施例揭露內容為限。在一實施例中，對稱擴散膜50係由第二物質502及第三物質503之粒子依任意比例散佈入第一物質501，之後再固化第一物質501以與第二物質502或/及第三物質503混合。舉例來說，在足夠高的溫度下液化一有機材料(例如膠 水、黏著劑、PET…)，再加入任意比例之第二物質502粒子及/或第三物質503粒子進入該熔化的有機材料中，並且攪拌混合均勻，再固化此混合物，以製得一對稱擴散膜。 A variety of different manufacturing methods can be used to fabricate symmetric diffusion films, and are not limited by the disclosure of the embodiments. In one embodiment, the symmetric diffusion film 50 is dispersed into the first substance 501 by the particles of the second substance 502 and the third substance 503 in an arbitrary ratio, and then the first substance 501 is cured to be combined with the second substance 502 or/and Mix three substances 503. For example, liquefying an organic material (such as glue) at a sufficiently high temperature Water, adhesive, PET...), then adding any proportion of the second substance 502 particles and/or the third substance 503 particles into the molten organic material, and stirring and mixing uniformly, and then solidifying the mixture to obtain a symmetry Diffusion film.
第6A圖和第6B圖係繪示本揭露第二實施例之兩種顯示裝置之示意圖。在第二實施例中，同樣簡單繪示穿透式液晶顯示器做實施例之說明。 6A and 6B are schematic views showing two display devices of the second embodiment of the present disclosure. In the second embodiment, a description will be given of a transmissive liquid crystal display as an embodiment.
第二實施例之顯示裝置61或61’包括一觸控面板(touchscreen)611、一準直光背光模組612設置在觸控面板611下方以提供光線至觸控面板611、一上偏光板614、一下偏光板615、和一對稱擴散膜(SDF)617設置在上偏光板614之一側。觸控面板611設置在上偏光板614和下偏光板615之間。且上偏光板614和下偏光板615係相互正交以提供一正交偏振效果。顯示裝置61或61’結構上的差異是在於對稱擴散膜(SDF)617的位置。第6A圖中，對稱擴散617係設置在上偏光板614的上方(即前方)。第6B圖中，對稱擴散膜617係設置在上偏光板614的後方，並位於上偏光板614和觸控面板611之間。第6A圖中，準直光自背光模組612發出後通過下偏光板615、觸控面板611、上偏光板614、和被對稱擴散膜617散射。第6B圖中，準直光自背光模組612發出後通過下偏光板615、觸控面板611、被對稱擴散膜617散射、 和通過上偏光板614。 The display device 61 or 61 ′ of the second embodiment includes a touch screen 611 , and a collimated light backlight module 612 is disposed under the touch panel 611 to provide light to the touch panel 611 and an upper polarizing plate 614 . A lower polarizing plate 615, and a symmetric diffusion film (SDF) 617 are disposed on one side of the upper polarizing plate 614. The touch panel 611 is disposed between the upper polarizing plate 614 and the lower polarizing plate 615. And the upper polarizing plate 614 and the lower polarizing plate 615 are orthogonal to each other to provide an orthogonal polarization effect. The difference in structure of the display device 61 or 61' is in the position of the symmetric diffusion film (SDF) 617. In Fig. 6A, the symmetric diffusion 617 is disposed above (i.e., in front of) the upper polarizer 614. In FIG. 6B, the symmetric diffusion film 617 is disposed behind the upper polarizing plate 614 and between the upper polarizing plate 614 and the touch panel 611. In FIG. 6A, the collimated light is emitted from the backlight module 612 and then scattered by the lower polarizing plate 615, the touch panel 611, the upper polarizing plate 614, and the symmetric diffusion film 617. In FIG. 6B, the collimated light is emitted from the backlight module 612 and then scattered by the lower polarizing plate 615, the touch panel 611, and the symmetric diffusion film 617. And passing through the upper polarizing plate 614.
對稱擴散膜617的結構、材料、各材料之折射率和比例等內容，請參照第一實施例，在此不再贅述。 For the structure and material of the symmetric diffusion film 617, the refractive index and ratio of each material, etc., please refer to the first embodiment, and details are not described herein again.
第7圖係顯示自本揭露第二實施例之一顯示裝置的背光模組發出之一準直光，其正常化光強度(normalized light intensity)對視角之關係圖。設置於觸控面板611下方之準直光背光模組612係提供一準直光朝向觸控面板611。一實施例中，準直光之半高寬值(HWHM)範圍大約5度到20度之間。 Figure 7 is a diagram showing the relationship between the normalized light intensity and the viewing angle of a collimated light emitted from the backlight module of the display device of the second embodiment of the present disclosure. The collimated light backlight module 612 disposed under the touch panel 611 provides a collimated light toward the touch panel 611. In one embodiment, the half-height width (HWHM) of the collimated light ranges between about 5 and 20 degrees.
在第二實施例中，自背光模組612發出之準直光通過下偏光板615、觸控面板611、上偏光板614，並被對稱擴散膜(設置在上偏光板614之一側)617所散射。 In the second embodiment, the collimated light emitted from the backlight module 612 passes through the lower polarizing plate 615, the touch panel 611, the upper polarizing plate 614, and is symmetrically diffused (on one side of the upper polarizing plate 614) 617. Scattered.
第8圖係顯示一傳統背光模組和第二實施例之背光模組，其光線之正常化光強度(normalized light intensity)對視角之關係圖。如第8圖所示，第二實施例之背光模組所發出的準直光，其離軸(例如大於20度之視角)之亮度降低；而垂直軸之亮度提高，約是傳統背光模組之垂直軸亮度的1.5倍。 Fig. 8 is a view showing a relationship between a normalized light intensity and a viewing angle of a conventional backlight module and a backlight module of the second embodiment. As shown in FIG. 8, the collimated light emitted by the backlight module of the second embodiment is reduced in brightness from an off-axis (for example, a viewing angle greater than 20 degrees); and the brightness of the vertical axis is increased, which is about a conventional backlight module. The vertical axis brightness is 1.5 times.
再者，在實際應用中，對稱擴散膜617的半高寬值(HWHM)可能會受所選用的背光模組所發出之準直光的半高寬值所影響。一實施例中，當準直光的半高寬值為20度，對稱擴散膜617的半高寬值係小於13.5度。注意的是，這裡提到的數值僅為例示之用，並非用以限制本揭露之半高寬值。 Furthermore, in practical applications, the full width at half maximum (HWHM) of the symmetric diffusion film 617 may be affected by the full width at half maximum of the collimated light emitted by the backlight module selected. In one embodiment, when the half-height width of the collimated light is 20 degrees, the full width at half maximum of the symmetric diffusion film 617 is less than 13.5 degrees. It is noted that the numerical values mentioned herein are for illustrative purposes only and are not intended to limit the half-height values of the present disclosure.
第9圖係為一傳統觸控面板和第二實施例之一顯示 裝置的亮度分佈模擬結果。在模擬實驗中，第二實施例之顯示裝置具有觸控感測器、對稱擴散膜與準直光背光模組。兩者的亮度分佈曲線顯示類似的趨勢-亮度隨視角(Theta；對垂直軸之角度)增加而下降。然而根據模擬結果，傳統觸控面板的亮度分佈曲線是不平滑的，第二實施例之顯示裝置則呈現平滑的亮度分佈曲線。再者，第二實施例之顯示裝置的背光模組，其光線在垂直軸之亮度(約600nits)係高於傳統背光模組光線在垂直軸之亮度(約500nits)，如第9圖所示。 Figure 9 is a display of a conventional touch panel and a second embodiment The brightness distribution of the device is simulated. In the simulation experiment, the display device of the second embodiment has a touch sensor, a symmetric diffusion film, and a collimated light backlight module. The brightness distribution curves of the two show a similar trend - the brightness decreases as the viewing angle (Theta; the angle to the vertical axis) increases. However, according to the simulation result, the brightness distribution curve of the conventional touch panel is not smooth, and the display device of the second embodiment exhibits a smooth brightness distribution curve. Furthermore, in the backlight module of the display device of the second embodiment, the brightness of the light on the vertical axis (about 600 nits) is higher than the brightness of the vertical backlight of the conventional backlight module (about 500 nits), as shown in FIG. .
再者，以下係對不同的顯示面板，包括一傳統觸控面板、一第一實施例之觸控面板和一第二實施例之觸控面板，做亮度比例的進一步研究和比較，其結果分別如第10A~10C圖所示。 Furthermore, the following is a further study and comparison of brightness ratios for different display panels, including a conventional touch panel, a touch panel of a first embodiment, and a touch panel of a second embodiment. As shown in Figures 10A~10C.
第10A圖顯示一傳統觸控面板(沒有對稱擴散膜和準直光背光模組)的等亮度圖(iso-luminance contours)。傳統觸控面板，其0度視角(垂直軸)的亮度值約532nit。第10B圖顯示一第一實施例之觸控面板(有對稱擴散膜和一般背光模組)的等亮度圖。第一實施例之觸控面板，其0度視角(垂直軸)的亮度值約357nit。第10C圖顯示一第二實施例之觸控面板(有對稱擴散膜和準直光背光模組)的等亮度圖。第二實施例之觸控面板，其0度視角(垂直軸)的亮度值約557nit。在傳統觸控面板的等亮度圖(第10A圖)中，一些離散的島狀區域代表在離軸角度觀看面板時，會看到亮度分佈缺陷。而從第一實施例和第二實施例之觸控面板的 等亮度圖(第10B&10C圖)之結果顯示，亮度分佈缺陷的情況有極大的改善，特別是在0°-180°方位角(azimuth angle)上。因此，結果證明，本揭露實施例(如第一和第二實施例)所提供之觸控面板確實解決了離軸角度觀看傳統面板會看到亮度分佈缺陷的問題。再者，第二實施例之觸控面板在0度視角(垂直軸)的亮度值也因使用了準直光背光模組而明顯提高。 Figure 10A shows iso-luminance contours of a conventional touch panel (without a symmetric diffusion film and a collimated light backlight module). In the conventional touch panel, the brightness value of the 0 degree angle of view (vertical axis) is about 532 nit. FIG. 10B shows an equal-luminance diagram of the touch panel (the symmetric diffusion film and the general backlight module) of the first embodiment. In the touch panel of the first embodiment, the brightness value of the 0 degree angle of view (vertical axis) is about 357 nit. FIG. 10C shows an isometric view of a touch panel (a symmetric diffusion film and a collimated light backlight module) of a second embodiment. In the touch panel of the second embodiment, the brightness value of the 0 degree angle of view (vertical axis) is about 557 nit. In the iso-luminance map (Fig. 10A) of a conventional touch panel, some discrete island-like regions represent a luminance distribution defect when viewing the panel at an off-axis angle. And the touch panel of the first embodiment and the second embodiment The results of the iso-luminance map (Fig. 10B & 10C) show that the luminance distribution defect is greatly improved, especially at an azimuth angle of 0°-180°. Therefore, the results prove that the touch panel provided by the disclosed embodiments (such as the first and second embodiments) does solve the problem that the conventional panel can see the brightness distribution defect when viewed from the off-axis angle. Moreover, the brightness value of the touch panel of the second embodiment at a viewing angle of 0 degrees (vertical axis) is also significantly improved by using a collimated light backlight module.
根據上述實施例，許多面板態樣，如穿透式/反射式/半穿透半反射式液晶顯示面板以及有機電激發光顯示面板，都可應用於本揭露實施例作為觸控面板(311/611)。實施例也適用於多種不同型態的觸控感測器，例如內嵌式(In-Cell)、表面式(On-Cell)和外掛式(Out-Cell)觸控感測器。再者，實施例之觸控面板的感測電極，其態樣、圖案和材料等並沒有特別限制。以下係提出其中一種實施例以說明具有感測電極的一液晶顯示面板。需注意的是，本揭露並不僅限於特定實施例，亦可包括在不脫申請權利範圍的情況下做修飾和變化的其它實施例。 According to the above embodiment, a plurality of panel aspects, such as a transmissive/reflective/transflective liquid crystal display panel and an organic electroluminescent display panel, can be applied to the disclosed embodiment as a touch panel (311/ 611). Embodiments are also applicable to a variety of different types of touch sensors, such as In-Cell, On-Cell, and Out-Cell touch sensors. Furthermore, the sensing electrodes of the touch panel of the embodiment are not particularly limited in terms of their appearance, pattern, and materials. One of the embodiments is presented below to illustrate a liquid crystal display panel having sensing electrodes. It is to be noted that the disclosure is not limited to the specific embodiment, and other embodiments that are modified and changed without departing from the scope of the application.
第11A圖繪示本揭露一實施例之具感測電極之一顯示裝置之示意圖。根據一實施例，一面板包括一顯示模組(顯示功能)和一觸控感測器耦接至顯示模組。如第11A圖所示，顯示裝置8之顯示模組80包括具有TFT玻璃基板801之一第一基板、具有彩色濾光片(CF)玻璃基板803之一第二基板、和位於第一基板和第二基板之間的一液晶層802。一彩色濾光層804和一黑色矩陣層(BM)係形成於CF玻璃基板803上。再者，第11A圖的顯 示裝置8更包括一背光模組82位於TFT玻璃基板801下方，和一對稱擴散膜(SDF)806設置在顯示模組80之上偏光板之一側，例如上方。背光模組82之一般光線(第一實施例)、或一準直光(第二實施例)係朝向顯示模組80的方向發出。再者，對稱擴散膜806的功能、材料、和位置等內容，類似上述實施例，在此不再贅述。 FIG. 11A is a schematic diagram showing a display device with a sensing electrode according to an embodiment of the present disclosure. According to an embodiment, a panel includes a display module (display function) and a touch sensor coupled to the display module. As shown in FIG. 11A, the display module 80 of the display device 8 includes a first substrate having a TFT glass substrate 801, a second substrate having a color filter (CF) glass substrate 803, and a first substrate and A liquid crystal layer 802 between the second substrates. A color filter layer 804 and a black matrix layer (BM) are formed on the CF glass substrate 803. Furthermore, the display of Figure 11A The display device 8 further includes a backlight module 82 under the TFT glass substrate 801, and a symmetric diffusion film (SDF) 806 disposed on one side of the polarizing plate above the display module 80, for example, above. The general light of the backlight module 82 (first embodiment) or a collimated light (second embodiment) is emitted toward the display module 80. Furthermore, the functions, materials, and positions of the symmetric diffusion film 806 are similar to the above embodiments, and are not described herein again.
一實施例中，觸控感測器包括具有一圖案(如一電極網格)的感測電極層(SE)，且圖案對應黑色矩陣層(BM)。感測電極層例如是以一金屬網格(metal mesh)製得。 In one embodiment, the touch sensor includes a sensing electrode layer (SE) having a pattern (eg, an electrode grid), and the pattern corresponds to a black matrix layer (BM). The sensing electrode layer is made, for example, in a metal mesh.
第11B圖繪示本揭露一實施例之觸控感測器之一電極圖案之示意圖。如第11B圖所示，一實施例之觸控感測器包括一感測電極層，感測電極層包括複數個第一電極91和複數個第二電極92。一實施例中，該些第一電極91和第二電極92可由同一層製作。且第一電極91和第二電極92係彼此電性絕緣並在結構上相隔開來。 FIG. 11B is a schematic diagram showing an electrode pattern of a touch sensor according to an embodiment of the present disclosure. As shown in FIG. 11B, the touch sensor of an embodiment includes a sensing electrode layer, and the sensing electrode layer includes a plurality of first electrodes 91 and a plurality of second electrodes 92. In an embodiment, the first electrode 91 and the second electrode 92 can be made of the same layer. And the first electrode 91 and the second electrode 92 are electrically insulated from each other and structurally separated.
一實施例中，觸控感測器之感測電極層係為TX-RX電容感測元件(TX-RX capacitive sensor elements)，其中第一電極91係為接收電極(receiver electrodes，RX)，第二電極92係為傳送電極(transmitter electrodes，TX)。第一電極91或第二電極92可分別藉由複數個導電橋體(conductive bridges)連接。在此實施例中，第一電極91或第二電極92係由同一層製作，且不需要導電橋體而直接連接。各個感測元件，包括傳送電極(92)和接收電極， (91)係具有一寄生電容(parasitic capacitance)和一互電容(mutual capacitance)。感測元件的寄生電容是指感測元件和接地之間的電容。感測元件的互電容是指感測元件和其它感測元件之間的電容。在一實施例中，可使用具有傳送電極和接收電極的一電容式感測器，由於電容耦合傳送電極和接收電極，當一訊號提供至傳送電極會產生一電流至接收電極。 In one embodiment, the sensing electrode layer of the touch sensor is a TX-RX capacitive sensor element, wherein the first electrode 91 is a receiver electrode (RX), The two electrodes 92 are transmitter electrodes (TX). The first electrode 91 or the second electrode 92 may be connected by a plurality of conductive bridges, respectively. In this embodiment, the first electrode 91 or the second electrode 92 is made of the same layer and is directly connected without a conductive bridge. Each sensing element includes a transmitting electrode (92) and a receiving electrode, (91) has a parasitic capacitance and a mutual capacitance. The parasitic capacitance of the sensing element refers to the capacitance between the sensing element and ground. The mutual capacitance of the sensing element refers to the capacitance between the sensing element and other sensing elements. In one embodiment, a capacitive sensor having a transmitting electrode and a receiving electrode can be used. Since the transmitting electrode and the receiving electrode are capacitively coupled, a current is supplied to the transmitting electrode to generate a current to the receiving electrode.
一實施例中，一電容式感測電路(capacitance sensing circuit)可藉由偵測一感測元件電容之變化而得知在電容式感測器的輸入。當使用者手指放在接近一感測元件處，該感測元件的電容以及電極與接地之間的電容可能因此產生改變，而一處理單元(processing unit)或其它電路可偵測到電容變化的數值大小，並將其轉換為一電壓位準或數位碼。 In one embodiment, a capacitive sensing circuit can know the input of the capacitive sensor by detecting a change in the capacitance of a sensing element. When the user's finger is placed close to a sensing element, the capacitance of the sensing element and the capacitance between the electrode and the ground may be changed, and a processing unit or other circuit may detect a change in capacitance. The value is converted and converted to a voltage level or digital code.
一實施例中，第一電極91(如接收電極)，第二電極92(如傳送電極)以金屬網格製成。一實施例中，電極網格的圖案係對應黑色矩陣層之圖案。一實施例中，感測電極層(SE)之一的一線寬(line width)LS係不大於黑色矩陣層之一寬度LB。一實施例中，感測電極層(SE)之一的一線寬(line width)LS係小於黑色矩陣層(BM)之一寬度LB，如第11A圖所示。 In one embodiment, the first electrode 91 (such as a receiving electrode) and the second electrode 92 (such as a transmitting electrode) are made of a metal mesh. In one embodiment, the pattern of the electrode grid corresponds to the pattern of the black matrix layer. In one embodiment, a line width L S of one of the sensing electrode layers (SE) is no greater than a width L B of one of the black matrix layers. In one embodiment, a line width L S of one of the sensing electrode layers (SE) is smaller than a width L B of one of the black matrix layers (BM) as shown in FIG. 11A.
雖然第11A圖繪示黑色矩陣層(BM)和感測電極層(SE)(即第一電極91和第二電極92)係位於CF玻璃基板803的不同側，但本揭露並不僅限於此。在另一實施例中，感測電極層(SE)和黑色矩陣層(BM)可能位於CF玻璃基板803的同一側。 Although FIG. 11A illustrates that the black matrix layer (BM) and the sensing electrode layer (SE) (ie, the first electrode 91 and the second electrode 92) are located on different sides of the CF glass substrate 803, the disclosure is not limited thereto. In another embodiment, the sensing electrode layer (SE) and the black matrix layer (BM) may be located on the same side of the CF glass substrate 803.
再者，雖然第11A圖繪示感測電極層(SE)位於黑色矩陣層(BM)之上，但本揭露並不僅限於此。在另一實施例中，感測電極層(SE)可能位於黑色矩陣層(BM)下方。在不脫本揭露保護範圍的情形下，可對實施例進行修飾與變化，例如元件的組合和/或功能可以適當變化和調整。 Furthermore, although FIG. 11A illustrates that the sensing electrode layer (SE) is located above the black matrix layer (BM), the disclosure is not limited thereto. In another embodiment, the sensing electrode layer (SE) may be located below the black matrix layer (BM). Modifications and variations of the embodiments may be made without departing from the spirit and scope of the invention.
再者，雖然第11A圖繪示顯示裝置具有黑色矩陣層(BM)，但本揭露並不僅限於此。其它不具黑色矩陣層之顯示裝置亦可應用本揭露，其中可設置一擴散層於對稱擴散膜806上，以在視覺上模糊感測電極層(SE)的存在。其它的修飾與變化可在不脫本揭露保護範圍的情形下進行，例如實施例中元件的組合和/或功能可以適當變化和調整，並非僅限於實施例中所述之態樣。 Furthermore, although FIG. 11A illustrates that the display device has a black matrix layer (BM), the disclosure is not limited thereto. Other disclosures that do not have a black matrix layer can also be applied to the disclosure, in which a diffusion layer can be disposed on the symmetric diffusion film 806 to visually blur the presence of the sensing electrode layer (SE). Other modifications and variations can be made without departing from the scope of the invention. For example, the combinations and/or functions of the elements in the embodiments may be appropriately changed and adjusted, and are not limited to the embodiments described in the embodiments.
根據上述，本揭露實施例所提出之具有觸控感測器的顯示裝置係使用一對稱擴散膜(SDF)，以使顯示裝置在對應各視角的亮度分佈上可產生一平滑曲線，解決了從離軸角度觀看傳統觸控面板時會產生的亮度分佈缺陷的問題。因此實施例中之顯示裝置在影像呈現品質上有大幅的進步。再者，實施例之顯示裝置係具有簡單結構且可以低價成本製造，因此實施例之顯示裝置亦適合大量生產，具有經濟效益。 According to the above, the display device with the touch sensor proposed by the embodiment of the present disclosure uses a symmetric diffusion film (SDF) to enable the display device to generate a smooth curve on the brightness distribution corresponding to each viewing angle, thereby solving the problem. The problem of the brightness distribution defect that occurs when viewing a conventional touch panel from an off-axis angle. Therefore, the display device in the embodiment has a great progress in image rendering quality. Furthermore, the display device of the embodiment has a simple structure and can be manufactured at a low cost, so that the display device of the embodiment is also suitable for mass production and has economic benefits.
綜上所述，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。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。因此，本發明之保護範圍當視後附之申請專利範圍所界定者為準。 In conclusion, the present invention has been disclosed in the above embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
312‧‧‧背光模組 312‧‧‧Backlight module
317‧‧‧對稱擴散膜 317‧‧‧symmetric diffusion membrane
31‧‧‧顯示裝置 31‧‧‧ display device
311‧‧‧觸控面板 311‧‧‧ touch panel
314‧‧‧上偏光板 314‧‧‧Upper polarizer
315‧‧‧下偏光板 315‧‧‧low polarizer
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| CN106324891B (en) * | 2016-09-21 | 2019-06-07 | 武汉华星光电技术有限公司 | A kind of LCD display of the symmetrical scattering light of formation |
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| CN201540552U (en) * | 2009-07-20 | 2010-08-04 | 洋华光电股份有限公司 | Touch pad |
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