201005322 九、發明說明： " 【發明所屬之技術領域】 ' 本發明涉及一種顯示器，尤其涉及一種具有增亮片之 顯示器。 【先前技術】 伴隨著科技進步，各類型之顯示器得到廣泛普及，如 液晶顯示器應用於手機及液晶電視螢幕（“ SOS liquid crystal TV display ” ，Electron Devices Meeting, 1974 © International, pp.5-5，Volume 20，1974)，發光二極體顯示器 應用於大型顯示看板等。 大部分之顯示器均包括一用於向外界呈現圖像之基 板，該基板之材料一般為透明之玻璃或塑膠材料等，顯示 器内部之光線自該透明基板射出，由此達到顯示之目的。 然而，該基板材料之折射率大於空氣之折射率，所以會有 部分光線由於全反射而損失於基板内，影響顯示器之出光 【發明内容】 有鑒於此，有必要提供一種出光輝度較高之顯示器。 一種顯示器，其包括一顯示屏及上述之增亮片，該增 亮片包括一透明基底，該透明基底具有相對之兩個表面， 其中一表面設置有複數正四棱錐形狀之微透鏡，另一表面 貼附於該顯示屏之表面。 採用增亮片之顯示器由於該增亮片之複數正四棱錐形 狀之微透鏡破壞了顯示屏出射光線至外界之全反射條件， 5 201005322 ，使更多之光線出射至外界，從而增加顯示屏之出 【實施方式】 下面將結合附圖對本發明作進—步詳細說明。 請參閱圖1’本發明第一實施例提供一種增亮片1〇, 二!^附於顯示屏之表面，使顯示屏之發光輝度增加。該 ^片10包括一基底12及設置於基底12表面之複數正四 棱錐形狀之微透鏡14,該複數微透鏡14形狀及大小相同， ο ，行列式排列於基底12之表面，相鄰微透鏡U之間且有 ，各個間距相等。可理解，相鄰微透鏡 密排列。 ^ J系 該基底12及複數微透鏡14之材料—般為塑膠材料， =1基丙稀酸甲醋（PGlymethyl _似灿，ρΜΜΑ) 1。優選地’該減微透鏡14與該基底ΐ2 ::同，基底12及微透鏡14之材料與顯示屏之= 射率相同或基本相同。 2增亮片1G貼附於顯示屏表面後，從顯示屏表面發 =光：進入增亮片1〇内，由於正四棱錐形狀之微透鏡14 題相對於顯示屏之表面傾斜之四個側面，所以與光線自 接:射至空氣令之入射角相比，光線自微透㈣ 更二時之入射角有所改變，破壞了全反射條件，使 夕之光線出射至外界，從而增加顯示屏之輝度。 該噸3 So所二’一本發明第二實施例提供-種顯示器20 ’ 表面之液晶顯示屏22及貼附料晶顯示屏22 表面之增梵片1〇。液晶顯示屏22具有一用於出射光線至外 6 201005322 2而達到圖像顯示之出光表面222，該增亮 :顯夜晶顯不屏22之出光表面222緊密貼合：j 管顯示屏、發光類型之顯示屏，如陰極射線 听知尤一極體顯示屏等。 該液晶顯示屏22可顯示圖像等資訊 發出之光線經過增亮片1〇接，以 曰颂不屏22 14具有相對於液㈣ 之^四棱錐形狀之微透鏡 T日顯不屏22之出光表面222傾斜之四個201005322 IX. Description of the invention: "Technical field of invention] The present invention relates to a display, and more particularly to a display having a brightness enhancement sheet. [Prior Art] With the advancement of technology, various types of displays have been widely used, such as liquid crystal displays for mobile phones and LCD TV screens ("SOS liquid crystal TV display", Electron Devices Meeting, 1974 © International, pp. 5-5, Volume 20, 1974), LED display for large display panels. Most of the displays include a substrate for presenting an image to the outside. The material of the substrate is generally a transparent glass or plastic material. Light from the inside of the display is emitted from the transparent substrate, thereby achieving display. However, the refractive index of the substrate material is greater than the refractive index of the air, so that some of the light is lost in the substrate due to total reflection, which affects the light output of the display. [Invention] In view of this, it is necessary to provide a display with high light emission. . A display comprising a display screen and the above-mentioned brightness enhancement sheet, the brightness enhancement sheet comprising a transparent substrate having opposite surfaces, one surface of which is provided with a plurality of positive quadrangular pyramid shaped microlenses, and the other surface is attached On the surface of the display. The display using the brightness-increasing sheet has a plurality of positive-pyramid-shaped microlenses of the brightness-increasing sheet to destroy the total reflection condition of the display-exposed light to the outside, 5 201005322, so that more light is emitted to the outside, thereby increasing the display screen. Modes The present invention will be described in detail below with reference to the accompanying drawings. Referring to FIG. 1 ', a first embodiment of the present invention provides a brightness enhancing film 1 〇, 2 附 attached to the surface of the display screen to increase the luminance of the display screen. The die 10 includes a substrate 12 and a plurality of regular quadrangular pyramid shaped microlenses 14 disposed on the surface of the substrate 12. The plurality of microlenses 14 are identical in shape and size, and are arranged in a matrix on the surface of the substrate 12 adjacent to the microlenses U. There is, and the spacing is equal. It can be understood that adjacent microlenses are closely arranged. ^ J system The material of the substrate 12 and the plurality of microlenses 14 is generally a plastic material, =1 acrylic acid methyl vinegar (PGlymethyl _like, ρΜΜΑ) 1. Preferably, the microlens 14 is identical to the substrate ::2:, and the material of the substrate 12 and the microlens 14 is the same or substantially the same as the display of the display. 2 After the brightening piece 1G is attached to the surface of the display screen, it is emitted from the surface of the display screen: light enters the brightness enhancement sheet 1〇, and the four sides of the microlens 14 of the shape of the square pyramid are inclined with respect to the surface of the display screen, so Light self-connection: Compared with the incident angle of the air, the incident angle of the light is changed from micro-transparent (4), and the total reflection condition is destroyed, so that the light of the evening light is emitted to the outside, thereby increasing the brightness of the display. The second embodiment of the invention provides a liquid crystal display 22 on the surface of the display 20' and a vanishing sheet on the surface of the substrate 22. The liquid crystal display 22 has a light-emitting surface 222 for emitting light to the outer 6 201005322 2 and reaching the image display. The brightening: the light-emitting surface 222 of the display screen 22 is closely attached: j tube display, light Types of display, such as cathode ray listening to a special body display. The liquid crystal display 22 can display an image and the like, and the light emitted by the information is connected through the brightness enhancement sheet 1 so as not to be shielded. The light surface of the microlens T having a quadrangular pyramid shape relative to the liquid (4) is not displayed. 222 tilted four
’以與光線自液晶顯示屏22直接入射至空 角相比，光線自撒读籽1yl 6 虱中之入射 變，破壞射至空氣時之人射角有所改 辦加顯-nr使更多之光線出射至外界，從而 曰加顯不屏之輝度。微透鏡14之各個侧面與底面之夾角越 大，則可使液晶顯示屏22之輝度越高。 當增亮月ίο貼附於液晶顯示屏22之出光表面222時， 會造成一定程度之圖像模糊’但通過控制微透鏡14之各侧 面與底面之夾角，可將圖像模糊範圍（_祕）控制於 可接党之範圍之内。請一併參閱圖3至8,下面將具體描述 圖像模糊產生之原因，及控制增亮片1〇改變模糊範圍之方 法： 請參閱圖3,增亮片1〇造成圖像模糊之原因如下： 此處為了更清楚地表示造成圖像模糊之原因，以其中 一個小於液晶顯示屏22表面積之發光區域24發出光線至 增亮片10為例。發光區域24發出之光線一部分發射至増 亮片10正對發光區域24之正對區域242，一部分發射至增 壳片10之與正對區域242相鄰之兩侧區域244，由於增亮 7 201005322 片10之微透鏡14改變了光線之入射角，破壞了全反射條 件，使光線出射至外界（若無增亮片1〇，則入射至兩側區 域244之光線則會因為全反射而反射回液晶顯示屏22 内）’從而產生圖像模糊。 如圖4所示’為液晶顯示屏22未貼附增亮片1〇所顯 示之圖像之光學模擬圖。如圖5至圖7所示，為液晶顯示 屏22貼附增亮片1〇後顯示圖像之光學模擬圖。本實施例 以液晶顯示屏22未貼附增亮片1〇時顯示正方形圖像26為 例，由於增凴片1〇之微透鏡14為正四棱錐形狀，其具有 兩兩相對之四個側面，且每個侧面與微透鏡14之底面之夾 角相等，因此貼附增亮片10之液晶顯示屏22所顯示之圖 像模糊範圍為與正方形圖像26之各個邊相鄰之區域，而與 正方形圖像26之四個角相鄰之對角區域則不會產生圖像模 糊現象。 將微透鏡14之側面與底面夾角定義為$ ’圖5至圖 之光學模擬时所示圖像是於微透鏡14底面之邊長為t ㈣，相鄰微透鏡14間距為7.7//m，爽角分❹為如度 45度及6〇度時類比形成之，正方形圖像26之邊長L=1: 二：二t形圖像％之邊長約為微透鏡14底面邊長與相彳 微透鏡14之間距之和之三倍，因此於圖4中之貼附增亮 10之顯示圖像會呈現類似網格之形狀。 定義：ίΐ::圖像26區域之發光強度為最大發光強度 :仏先強度於大於等於最大發光強度之” 範圍為實際發光範圍’則該實際發光範圍於與正方形圖; 8 201005322 • 26之邊垂直方向之寬度為L’ ’則圖像模糊範圍之值表示為 • D = (L’-L)/2,即D是發光強度為最大發光強度之l/e2之條 紋至與該條紋相鄰之正方形圖像26之邊之距離。 分別將微透鏡14之側面與底面夹角設置^ 3〇度、 45度及60度進行光學類比，結果如下： 如圖5所示，為當炎角θ為30度時，液晶顯示屏22 所顯示圖像之光學模擬圖，此時，圖像模糊範圍之值^約 為 107.5 y m。 如圖6所示，為當夾角0為45度時，液晶顯示屏^ 所顯示圖像之光學模擬圖，此時，圖像模㈣圍之值DM 為 167.5 y m。 如圖7所示’為當夾角θ為6〇度時，液晶顯示屏22 所顯示圖像之光學模擬圖，此時，圖像模糊範圍之值D3約 為 282.5 // m。 由上可知’隨著微透鏡14之侧面與底面之夹角之增 ❹大，顯示器之顯示輝度增高，但顯示器顯示之圖像模糊範 圍之值也變大，即圖像之模糊程度變高。而對於不同類型 之顯示器，人眼可接受之圖像模糊範圍不同，故，可根據 實際需要，通過調節微透鏡14之側面與底面之夾角使圖像 模糊範圍達到人眼可接受之範圍，既提高了顯示輝度又確 保了顯示品質。本實施例中’當顯示屏之圖元大小範圍為 177 # mxl77 " m至5000以mx5_# m，相鄰圖元之間距為 35# m至177/zm時’正四棱錐形狀之微透鏡14之側面盘 底面之夾角β之範圍優選為3〇度^<9〇度，如此則既提 9 201005322 ， • 高了顯示輝度，又使圖像模糊範圍控制於人眼可接受之範 圍。 相對於先前技術，本實施例顯示器20於液晶顯示屏22 之出光表面222貼附了增亮片1〇,該增亮片包括複數正 四棱錐形狀之微透鏡14 ’可使液晶顯示屏22發出之光線更 多地出射至外界，從而增加顯示器2〇之輝度。另外，可通 過調節本實施例之正四棱錐形狀之微透鏡14側面與底面之 ❹夾角來使圖像模糊範圍達到人眼可接受之範圍，既提高了 顯示輝度又確保了顯示品質，使增亮片1〇之設計更加簡單。 知上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施方 式，自不能以此限制本案之申請專利範圍。舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化，皆 應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 > ®1係本發明第—實施例增亮片之立體示意圖。 圖2係本發明第二實施例之採用第一實施例之增亮片 之顯示器之立體示意圖。 圖3係第二實施例之顯示器產生模糊圖像之光路圖。 圖4係未貼附增亮片時液晶顯示屏顯示圖像之光學模'In contrast to the direct incidence of light from the liquid crystal display 22 to the empty angle, the light changes from the incident in the 1yl 6 籽 seed, and the angle of the human when the light is hit into the air is changed. -nr makes more The light is emitted to the outside world, thereby increasing the brightness of the screen. The larger the angle between the respective sides of the microlens 14 and the bottom surface, the higher the luminance of the liquid crystal display panel 22. When the highlighting month ίο is attached to the light-emitting surface 222 of the liquid crystal display 22, a certain degree of image blurring is caused. However, by controlling the angle between each side surface of the microlens 14 and the bottom surface, the image blurring range can be obtained (_ secret ) Controlled within the scope of the party. Please refer to FIG. 3 to FIG. 8, which will specifically describe the cause of image blurring and the method of controlling the brightness enhancement film 1 to change the blur range: Referring to FIG. 3, the reason for the image blurring caused by the brightness enhancement film 1 is as follows: In order to more clearly indicate the cause of image blurring, one of the light-emitting regions 24 that is smaller than the surface area of the liquid crystal display 22 emits light to the brightness-enhancing sheet 10 as an example. A portion of the light emitted by the illuminating region 24 is emitted to the facing region 242 of the illuminating sheet 10 facing the illuminating region 24, and a portion of the illuminating sheet 10 is emitted to the contiguous region 242 adjacent to the facing region 244, due to the brightening 7 201005322 The microlens 14 of 10 changes the incident angle of the light, destroys the total reflection condition, and causes the light to be emitted to the outside (if there is no brightener 1〇, the light incident on the side regions 244 is reflected back to the liquid crystal display due to total reflection. Inside screen 22) 'This produces image blur. As shown in Fig. 4, 'is an optical simulation of the image displayed on the liquid crystal display panel 22 without the highlighter 1 贴 attached. As shown in Figs. 5 to 7, an optical simulation image of the image is displayed after the brightness enhancement sheet 1 is attached to the liquid crystal display panel 22. In this embodiment, the square image 26 is displayed when the liquid crystal display panel 22 is not attached with the brightness enhancing sheet 1 , and the microlens 14 of the reinforcing sheet 1 has a regular quadrangular pyramid shape, and has two opposite sides, and The angle between each side and the bottom surface of the microlens 14 is equal, so that the image blurring range displayed by the liquid crystal display panel 22 to which the brightness enhancing sheet 10 is attached is an area adjacent to each side of the square image 26, and a square image The diagonal areas adjacent to the four corners of 26 do not cause image blurring. The angle between the side surface of the microlens 14 and the bottom surface is defined as $'. The image shown in the optical simulation of FIG. 5 to FIG. 5 is the length of the side of the bottom surface of the microlens 14 is t (four), and the spacing of the adjacent microlenses 14 is 7.7/m. The cool angle is formed by the analogy of 45 degrees and 6 degrees, and the side length of the square image 26 is L=1: Two: the length of the side of the two t-shaped image is about the length of the bottom side of the microlens 14 and the phase The sum of the distances between the microlenses 14 is three times, so that the display image attached to the highlight 10 in FIG. 4 will have a mesh-like shape. Definition: ΐ:: The luminous intensity of the image 26 area is the maximum luminous intensity: the first intensity is greater than or equal to the maximum luminous intensity. The range is the actual luminous range. The actual luminous range is in the square and the square; 8 201005322 • 26 The width of the vertical direction is L' ', and the value of the image blurring range is expressed as • D = (L'-L)/2, that is, D is the stripe of the l/e2 whose luminous intensity is the maximum luminous intensity to be adjacent to the stripe. The distance between the sides of the square image 26. The optical analogy is set by the angle between the side of the microlens 14 and the bottom surface, respectively, and the angle is 45 degrees and 60 degrees. The results are as follows: As shown in Fig. 5, the angle is θ. At 30 degrees, the optical analog image of the image displayed on the liquid crystal display 22, at this time, the value of the image blur range is about 107.5 ym. As shown in Fig. 6, when the angle 0 is 45 degrees, the liquid crystal display Screen ^ The optical simulation image of the displayed image. At this time, the value DM of the image mode (4) is 167.5 ym. As shown in Fig. 7, the image displayed on the liquid crystal display 22 is when the angle θ is 6 degrees. The optical simulation map, at this time, the value of the image blur range D3 is about 282.5 // m. It is known that as the angle between the side surface and the bottom surface of the microlens 14 increases, the display brightness of the display increases, but the value of the image blur range displayed by the display also becomes larger, that is, the degree of blurring of the image becomes higher. Different types of displays have different image blurring ranges acceptable to the human eye. Therefore, the angle of the image blur can be adjusted to an acceptable range of the human eye by adjusting the angle between the side surface and the bottom surface of the microlens 14 according to actual needs, thereby improving the range. Displaying the brightness and ensuring the display quality. In this embodiment, when the size of the display element is 177 # mxl77 " m to 5000 to mx5_# m, the distance between adjacent elements is 35# m to 177/zm The range β of the side surface of the side surface of the microlens 14 of the positive quadrangular pyramid shape is preferably 3 ^ degrees ^ < 9 〇 degrees, so that 9 201005322 is raised, • the display brightness is increased, and the image blurring range is controlled. The brightness of the light-emitting surface 222 of the liquid crystal display panel 22 is attached to the light-emitting surface 222 of the liquid crystal display panel 22, and the brightness-increasing sheet includes a plurality of micro-lenses 14' in the shape of a regular pyramid. The light emitted from the crystal display panel 22 is more emitted to the outside, thereby increasing the brightness of the display 2. In addition, the image blurring range can be adjusted by adjusting the angle between the side surface and the bottom surface of the micro-lens 14 of the positive quadrangular pyramid shape of this embodiment. It can reach the acceptable range of the human eye, which not only improves the display brightness but also ensures the display quality, making the design of the brightening film 1 更加 simpler. As described above, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the present invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS > ® 1 is a perspective view of a brightening sheet of the first embodiment of the present invention. Figure 2 is a perspective view showing a display using the brightness enhancement sheet of the first embodiment of the second embodiment of the present invention. Fig. 3 is a light path diagram showing a blurred image produced by the display of the second embodiment. Figure 4 is an optical mode of the liquid crystal display screen when the brightness enhancement film is not attached.
圍之光學模擬圖。 贴附增焭月後，微透鏡 示屏顯示圖像之模糊範 201005322 【主要元件符號說明】 增亮片 10 基底 12 微透鏡 14 顯示器 20 液晶顯不屏 22 出光表面 222 發光區域 24 正對區域 242 兩側區域 244 正方形圖像 26 參 11Optical simulation of the surrounding. After the affixing month, the pleat screen displays the image blurring degree 201005322 [Main component symbol description] Brightening film 10 Base 12 Microlens 14 Display 20 Liquid crystal display screen 22 Light-emitting surface 222 Light-emitting area 24 Directly facing area 242 Side area 244 square image 26 Ref 11