1335789 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種顯示裝置，尤指一種一電路板結合 於一後殼之顯示裝置。 【先前技術】 平面顯示器為目前日趨流行的一種顯示裝置，其中液 晶顯示器更因為具有外型輕薄、耗電量少以及無輻射污染 等特性，故已被廣泛地應用在個人桌上型電腦螢幕以及筆 記型電腦、個人數位助理（PDA)等攜帶式資訊產品上，而且 大尺寸平面顯示器甚至已有逐漸取代陰極射線管（Cathode Ray Tube, CRT)監視器及傳統電視的趨勢。 關於液晶顯示裝置之組裝目前大抵上可分為兩種方 式，於此介紹如下。請參閱第1圖，第1圖為先前技術一 顯示裝置10之元件爆炸示意圖，顯示裝置10係可為一液 晶顯示裝置，顯示裝置10包含有一前殼(bezel)12，其上設 有一開口 14 ; 一後殼16，結合於前殼12藉以包覆顯示裝 置10之内部元件；一顯示面板18，設置於相對應開口 14 之位置，用來透過開口 14發出影像光線；一背光模組20， 結合於顯示面板18，用來提供顯示面板18 —光源；一主 結構(main frame)22，組裝於背光模組20之一背殼24(通常 1335789 係為一鐵件）；至少一電路，板26，鎖固於主結構22上且電 連接於顯示面板18與背光模組2〇，用來驅動顯示面板18 與方光核組20，以及一防電磁干擾（electro-magnetic radiation interference，EMI)遮蔽蓋板28,用來防止電子零 件受電磁波干擾。於顯示裝置1〇之組裝方面，乃是將主結 構22組裝於背光模組20之背殼24上，且再將電路板24 以及防電磁干擾遮蔽蓋板26鎖固於主結構22上，之後再 結合前殼12與後殼16，而完成顯示裝置1〇之組裝動作。 至於另一種組裝方式，請參閱第2圖，第2圖為先前 技術一顯示裝置30之元件爆炸示意圖，顯示裝置30亦可 為一液晶顯示裝置，顯示裝置30包含有一前殼32，其上 設有一開口 34 ; —後殼36，結合於前殼32藉以包覆顯示 裝置3 0之内部元件；一顯示面板3 8，設置於相對應開口 34之位置，用來透過開口 34發出影像光線；一背光模組 40，結合於顯示面板38，用來提供顯示面板38 —光源； 至少一電路板42，直接鎖固於背光模組40之一背殼44(通 常係為一鐵件）且電連接於顯示面板38與背光模組40，用 來驅動顯示面板38與背光模組40;以及一防電磁干擾遮 蔽蓋板46，用來防止電子零件受電磁波干擾。於顯示裝置 3〇之組裝方面，乃是直接將電路板42與防電磁干擾遮蔽 蓋板46直接鎖固於背光模組40之背殼44上，故可減少前 述作為機構連接介面之顯示裝置10之主結構22，之後再 1335789 結合前殼32與後殼36，而完成顯示裝置30之組裝動作。 綜上所述，先前技術之顯示裝置需要使用主結構與背 光模組之背殼作為組裝各零件（電路板、防電磁干擾遮蔽蓋 板）之機構連接介面，如此一來不但會增加零件成本，亦會 浪費組裝工時。 【發明内容】 本發明係提供一種將一電路板結合於一後殼之顯示裝 置，以解決上述之問題。 本發明之申請專利範圍係揭露一種一電路板結合於一 後殼之顯示裝置，其包含有一前殼，其上設有一開口； 一 後殼，結合於該前殼；一顯示面板，設置於相對應該開口 之位置且安裝於該前殼與該後殼之内部且固定於該後殼之 内側；一背光模組，安裝於該前殼與該後殼之内部且固定 於該後殼之内側，用來提供該顯示面板一光源；以及一電 路板，安裝於該前殼與該後殼之内部且固定於該後殼之内 側且電連接於該顯示面板與該背光模組。 【實施方式】 請參閱第3圖至第6圖，第3圖至第6圖為本發明一 顯示裝置50之組裝示意圖，顯示裝置50亦可為一液晶顯 1335789 示裝置，顯示裝置50包含有一前殼52,其上設有一開口 54 ; —後殼56，結合於前殼52藉以包覆顯示裝置50之内 部元件；一顯示面板58，設置於相對應開口 54之位置， 用來透過開口 54發出影像光線；一背光模組60，結合於 顯示面板58，用來提供顯示面板58 —光源；至少一電路 板62，電連接於顯示面板58與背光模組60，用來驅動顯 示面板58與背光模組60;以及一防電磁干擾遮蔽蓋板64, 用來防止電子零件受電磁波干擾。 於顯示裝置50之組裝方面，如第3圖所示，首先乃是 先將電路板62固定於後殼56之一内侧66，其中固定方式 係可為鎖固或卡合等方式，之後再將防電磁干擾遮蔽蓋板 64覆蓋於需要屏蔽之電路板62上且固定於後殼56之内側 66，藉以避免電路板62之電子零件受電磁波干擾，而其固 定方式亦可為鎖固或卡合等方式。 如第4圖所示，接下來再將背光模組60組裝於電路板 62與防電磁干擾遮蔽蓋板64上方且固定於後殼56之内側 66,而其固定方式可為鎖固或卡合等方式，背光模組60係 可包含燈管、導光板、擴散片、反光板等光學元件，用來 提供顯示面板58光源。 如第5圖所示，接下來再將顯示面板58組裝於背光模 8 1335789 組60上方且固定於後殼5.6之内側66，而其固定方式可為 鎖固或卡合等方式，顯示面板58係可為一液晶顯示面板。 最後，如第6圖所示，再將前殼52組裝於顯示面板58 上方且連接於後殼56，而顯示面板58係定位於相對應開 口 54之位置，故顯示面板58可透過開口 54發出影像光 線，至於前殼52與後殼56之連接固定方式可為鎖固或卡 合等方式，如此一來前殼52與後殼56可共同包覆顯示裝 置50之内部元件’如電路板62、防電磁干擾遮蔽蓋板64、 背光模組60、顯示面板58等，而完成顯示裝置5〇之組裝 動作。 綜上所述’本發明係將電路板62、防電磁干擾遮蔽蓋 板64、背光模組60、顯示面板58等内部元件直接固定於 後殼56之内側66且安裝於前殼52與後殼56之内部，至 • 於固定方式係可利用鎖固、卡合等機構結合方式，也就是 說將後殼56直接作為固定内部各元件之機構介面，如此一 來便可省去先前技術所需利用之主結構與背光模組之背殼 • 作為組裝各令件之機構連接介面，而可減少零件成本與組 . 裝工時。 相較於先前技術，本發明之顯示裝置係直接將電路 板、防電磁干擾遮蔽蓋板、背光模組、顯示面板等内部元 1335789 件固定於後殼之内側，意即將後殼直接作為固定内部各元 件之機構介面，如此二來便可省去先前技術所需利用之主 結構與背光模組之背殼作為組裝各零件之機構連接介面， 而可減少零件成本與組裝工時。 以上所述僅為本發明之較佳實施例，凡依本發明申請 專利範圍所做之均等變化與修飾，皆應屬本發明專利之涵 蓋範圍。 【圖式簡單說明】 第1圖為先前技術顯示裝置之元件爆炸示意圖。 第2圖為先前技術顯示裝置之元件爆炸示意圖。 第3圖至第6圖為本發明顯示裝置之組裝示意圖。 【主要元件符號說明】 S > 10 顯示裝置 12 前殼 14 開口 16 後殼 18 顯示面板 20 背光模組 22 主結構 24 背殼 26 電路板 28 防電磁干擾遮蔽 蓋板 30 顯示裝置 32 前殼 10 1335789 34 開口 36 後殼 38 顯示面板 ' 40 背光模組 42 電路板 44 背殼 46 防電磁干擾遮蔽 蓋板 50 顯示裝置 52 前殼 54 開口 56 後殼 58 顯示面板 60 背光模組 62 電路板 64 防電磁干擾遮蔽 蓋板 66 内側 111335789 IX. Description of the Invention: [Technical Field] The present invention provides a display device, and more particularly to a display device in which a circuit board is coupled to a rear case. [Prior Art] A flat panel display is a display device which is becoming more and more popular at present, and a liquid crystal display has been widely used in a personal desktop computer screen because of its thinness, low power consumption, and no radiation pollution. Portable information products such as notebook computers and personal digital assistants (PDAs), and large-size flat-panel displays have even gradually replaced the trend of cathode ray tube (CRT) monitors and traditional televisions. The assembly of the liquid crystal display device can be roughly divided into two methods at present, and the introduction is as follows. Please refer to FIG. 1 . FIG. 1 is a schematic diagram showing the explosion of components of the display device 10 of the prior art. The display device 10 can be a liquid crystal display device. The display device 10 includes a front bezel 12 and an opening 14 . A rear case 16 is coupled to the front case 12 to cover the internal components of the display device 10; a display panel 18 is disposed at a position corresponding to the opening 14 for emitting image light through the opening 14; a backlight module 20, The display panel 18 is used to provide the display panel 18 - a light source; a main frame 22 is assembled in the back cover 24 of the backlight module 20 (usually 1335789 is a piece of iron); at least one circuit, board 26, locked on the main structure 22 and electrically connected to the display panel 18 and the backlight module 2, used to drive the display panel 18 and the square light core group 20, and an electromagnetic-induced interference (EMI) The cover plate 28 is used to prevent electronic components from being disturbed by electromagnetic waves. In the assembly aspect of the display device 1A, the main structure 22 is assembled on the back shell 24 of the backlight module 20, and the circuit board 24 and the electromagnetic interference shielding cover 26 are locked on the main structure 22, after which The front case 12 and the rear case 16 are combined to complete the assembly operation of the display device 1〇. For another assembly method, please refer to FIG. 2, which is a schematic diagram of the explosion of components of the display device 30 of the prior art. The display device 30 can also be a liquid crystal display device. The display device 30 includes a front case 32. There is an opening 34; a rear case 36 is coupled to the front case 32 to cover the internal components of the display device 30; a display panel 38 is disposed at a position corresponding to the opening 34 for emitting image light through the opening 34; The backlight module 40 is coupled to the display panel 38 for providing the display panel 38 - the light source. The at least one circuit board 42 is directly locked to the back shell 44 of the backlight module 40 (usually a piece of iron) and electrically connected. The display panel 38 and the backlight module 40 are used to drive the display panel 38 and the backlight module 40; and an electromagnetic interference shielding cover 46 is used to prevent electronic components from being interfered by electromagnetic waves. In the assembly aspect of the display device 3, the circuit board 42 and the electromagnetic interference shielding cover 46 are directly locked on the back shell 44 of the backlight module 40, so that the display device 10 as the mechanism connection interface can be reduced. The main structure 22, and then 1335789, combines the front case 32 and the rear case 36 to complete the assembly operation of the display device 30. In summary, the display device of the prior art needs to use the back structure of the main structure and the backlight module as a mechanism connection interface for assembling various parts (circuit board, anti-electromagnetic interference shielding cover), so that not only the component cost is increased, It also wastes assembly hours. SUMMARY OF THE INVENTION The present invention provides a display device for bonding a circuit board to a rear case to solve the above problems. The disclosure of the present invention discloses a display device in which a circuit board is coupled to a rear case, and includes a front case having an opening therein; a rear case coupled to the front case; and a display panel disposed on the opposite side It should be opened and installed in the inner side of the front case and the rear case and fixed on the inner side of the rear case; a backlight module is installed inside the front case and the rear case and fixed on the inner side of the rear case, The display panel is provided with a light source; and a circuit board is mounted on the inner side of the front case and the rear case and is fixed to the inner side of the rear case and electrically connected to the display panel and the backlight module. [Embodiment] Please refer to FIG. 3 to FIG. 6 . FIG. 3 to FIG. 6 are schematic diagrams showing the assembly of a display device 50 according to the present invention. The display device 50 can also be a liquid crystal display 1335789 display device. The display device 50 includes a display device 50 . The front case 52 is provided with an opening 54. The rear case 56 is coupled to the front case 52 to cover the internal components of the display device 50. A display panel 58 is disposed at the corresponding opening 54 for transmitting through the opening 54. A backlight module 60 is coupled to the display panel 58 for providing the display panel 58 - the light source; at least one circuit board 62 is electrically connected to the display panel 58 and the backlight module 60 for driving the display panel 58 and The backlight module 60; and an electromagnetic interference shielding cover 64 are used to prevent electronic components from being interfered by electromagnetic waves. In the assembly aspect of the display device 50, as shown in FIG. 3, first, the circuit board 62 is first fixed to one inner side 66 of the rear case 56, wherein the fixing manner can be locked or engaged, and then The electromagnetic interference shielding cover 64 covers the circuit board 62 to be shielded and is fixed to the inner side 66 of the rear case 56, so as to prevent the electronic components of the circuit board 62 from being interfered by electromagnetic waves, and the fixing manner thereof may also be locking or snapping. Waiting for the way. As shown in FIG. 4, the backlight module 60 is assembled on the circuit board 62 and the electromagnetic interference shielding cover 64 and fixed to the inner side 66 of the rear case 56, and the fixing manner thereof can be locked or engaged. In an alternative manner, the backlight module 60 can include optical components such as a lamp tube, a light guide plate, a diffusion sheet, and a reflector to provide a light source for the display panel 58. As shown in FIG. 5, the display panel 58 is then assembled over the backlight module 8 1335789 group 60 and fixed to the inner side 66 of the rear case 5.6, and the fixing manner thereof may be the manner of locking or snapping, and the display panel 58 It can be a liquid crystal display panel. Finally, as shown in FIG. 6 , the front cover 52 is assembled over the display panel 58 and connected to the rear case 56 , and the display panel 58 is positioned at the corresponding opening 54 , so that the display panel 58 can be emitted through the opening 54 . The image light may be connected or fixed to the front case 52 and the rear case 56. The front case 52 and the rear case 56 may together cover the internal components of the display device 50 such as the circuit board 62. The electromagnetic interference shielding cover 64, the backlight module 60, the display panel 58, and the like complete the assembly operation of the display device 5〇. In summary, the present invention directly fixes internal components such as the circuit board 62, the electromagnetic interference shielding cover 64, the backlight module 60, and the display panel 58 to the inner side 66 of the rear case 56 and is mounted to the front case 52 and the rear case. In the interior of the 56, the fixing method can be combined by means of locking, snapping, etc., that is, the rear case 56 is directly used as a mechanism interface for fixing the internal components, thereby eliminating the need of the prior art. Utilizing the main structure and the back cover of the backlight module • As a mechanism connection interface for assembling the various components, the part cost and the group can be reduced. Compared with the prior art, the display device of the present invention directly fixes the internal component 1335789 of the circuit board, the electromagnetic interference shielding cover, the backlight module, the display panel and the like to the inner side of the rear case, meaning that the rear case directly serves as a fixed internal part. The mechanism interface of each component can eliminate the main structure required by the prior art and the back shell of the backlight module as the mechanism connection interface for assembling the components, thereby reducing the component cost and assembly man-hour. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the patent application of the present invention should fall within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the explosion of components of the prior art display device. Figure 2 is a schematic diagram showing the explosion of components of prior art display devices. 3 to 6 are schematic views showing the assembly of the display device of the present invention. [Main component symbol description] S > 10 Display device 12 Front case 14 Opening 16 Rear case 18 Display panel 20 Backlight module 22 Main structure 24 Back case 26 Circuit board 28 Electromagnetic interference shielding cover 30 Display device 32 Front case 10 1335789 34 opening 36 rear case 38 display panel ' 40 backlight module 42 circuit board 44 back case 46 anti-electromagnetic interference shielding cover 50 display device 52 front case 54 opening 56 rear case 58 display panel 60 backlight module 62 circuit board 64 Electromagnetic interference shielding cover 66 inside 11