TWI753769B

TWI753769B - Touch pad with key input function

Info

Publication number: TWI753769B
Application number: TW110104102A
Authority: TW
Inventors: 郭宏瑋; 吳建輝
Original assignee: 致伸科技股份有限公司
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2022-01-21
Also published as: TW202232292A

Abstract

The present invention relates to a touch pad with key input function, which includes a printed circuit board, a plurality of miniature light-emitting diode units, and a light guide module. The printed circuit board has a first surface and a touch sensing layer, the touch sensing layer is formed on the first surface, and the touch sensing layer has a touch sensing range. The miniature light-emitting diode units are arranged on the first surface corresponding to the touch sensing range. The light guide module is disposed on the touch sensing layer and the miniature light-emitting diode units, and the light guide module includes a light guide plate having a plurality of grooves corresponding to the miniature light-emitting diode units for accommodating the miniature light-emitting diode units. Wherein, the touch sensing layer has a plurality of touch sensing units, and the touch sensing units constitute a plurality of touch sensing regions, and each touch sensing region forms a touch button representing a preset content.

Description

具按鍵輸入功能的觸控板Touchpad with key input

本發明是有關於一種具按鍵輸入功能的觸控板，尤其是有關於一種具有微型發光二極體的觸控板。The present invention relates to a touch panel with key input function, in particular, to a touch panel with miniature light emitting diodes.

現代人於日常生活裡常會使用到筆記型電腦，而使用者除了可搭配外接的滑鼠裝置來操作筆記型電腦之外，還可藉由一般都會配置在筆記型電腦上的一觸控板(Touch Pad)來進行例如游標移動或點選(click)的控制與操作。Modern people often use notebook computers in their daily life. In addition to using an external mouse device to operate the notebook computer, users can also use a touchpad ( Touch Pad) to perform controls and operations such as cursor movement or click.

隨著觸控與背光技術的進步，目前許多筆記型電腦所配置的觸控板還進一步內建有按鍵輸入功能。其設計是對觸控板的一特定位置進行觸壓後就可點亮下方的背光模組並顯示出多個數字或符號，同時觸控板就會將顯示的數字或符號所對應的區域切換成相應的按鍵，使用者對其點按就可輸出相應的數字、符號或做退格(Backspace)、輸入(Enter)等功能。如此，筆記型電腦可不必外接數字按鍵裝置也能夠快速地提供輸入功能。With the advancement of touch and backlight technology, the touchpads of many notebook computers are further equipped with built-in key input functions. Its design is to touch and press a specific position of the touchpad to light up the backlight module below and display multiple numbers or symbols, and at the same time, the touchpad will switch the area corresponding to the displayed numbers or symbols. The user can click on it to output corresponding numbers, symbols, or perform functions such as Backspace and Enter. In this way, the notebook computer can quickly provide input functions without the need for an external number key device.

請參見圖1A至圖1C。其中圖1A為習知具按鍵輸入功能的觸控板1的示意圖；圖1B為該觸控板1的平面設置示意圖；圖1C為該觸控板1的側面設置示意圖。如圖1A所示，該觸控板1的按鍵輸入功能包括了多個數字或符號，且由分隔線所劃分出的每一區域代表一個觸控按鍵110。其次，如圖1B和圖1C所示，該觸控板1是採用側向式光源設置，也就是將多個發光二極體(LED)單元13設置在該觸控板1的一側上，並由一導光板12擴散至該觸控板1的整個平面區域以形成面光源。See Figures 1A to 1C. 1A is a schematic diagram of a conventional touch panel 1 with a key input function; FIG. 1B is a schematic diagram of a plane layout of the touch panel 1 ; FIG. 1C is a schematic diagram of a side layout of the touch panel 1 . As shown in FIG. 1A , the key input function of the touch panel 1 includes a plurality of numbers or symbols, and each area divided by a dividing line represents a touch key 110 . Next, as shown in FIG. 1B and FIG. 1C , the touch panel 1 is provided with a side light source, that is, a plurality of light emitting diode (LED) units 13 are arranged on one side of the touch panel 1 , The light guide plate 12 is diffused to the entire plane area of the touch panel 1 to form a surface light source.

承上所述，該觸控板1是在一印刷電路板10上形成有以陣列形式呈現的多個觸控感應單元111，並將多個發光二極體單元13分佈設置在該印刷電路板10的一側上。此外，該導光板12具有多個相應於該些發光二極體單元13的缺口120，用以提供與該些發光二極體單元13的組裝和置放。在該導光板12上方還依序設有一遮罩層14、一擴散層15和一透光片16，該遮罩層14上形成有相應其數字或符號的透光圖案，以將其數字或符號的光線透射而出，而該擴散層15和該透光片16則可分別提供透射光線的均勻化與使用者手指的接觸。As mentioned above, the touch panel 1 is formed on a printed circuit board 10 with a plurality of touch sensing units 111 in an array form, and a plurality of light emitting diode units 13 are distributed on the printed circuit board 10 on the side. In addition, the light guide plate 12 has a plurality of notches 120 corresponding to the light emitting diode units 13 to provide assembly and placement with the light emitting diode units 13 . A mask layer 14 , a diffuser layer 15 and a light-transmitting sheet 16 are arranged in sequence above the light guide plate 12 , and a light-transmitting pattern corresponding to its number or symbol is formed on the mask layer 14 . The light of the symbol is transmitted out, and the diffusion layer 15 and the light-transmitting sheet 16 can respectively provide uniformity of the transmitted light and contact with the user's finger.

但眾所周知的，在觸控感應單元111上設置發光二極體單元13會影響觸控感應的效果。以電容式的觸控技術來說，該些觸控感應單元111是分別由具有特定圖案的感應電路和驅動電路所構成，若發光二極體單元13的設置遮蔽了相關的電路結構將會造成該處的電容值改變，使得在其相應位置上的觸控感應單元111的敏感度較差，讓手指的觸控無法被正常的感應。以圖1B來說，位於該觸控板1的一上緣部分A的觸控感應單元111會成為觸控的失效區域。However, it is well known that disposing the light emitting diode unit 13 on the touch sensing unit 111 will affect the effect of the touch sensing. In the case of capacitive touch technology, the touch sensing units 111 are respectively composed of sensing circuits and driving circuits with specific patterns. The capacitance value here changes, so that the sensitivity of the touch sensing unit 111 at the corresponding position is poor, so that the touch of the finger cannot be sensed normally. Referring to FIG. 1B , the touch sensing unit 111 located at an upper edge portion A of the touch panel 1 will become a touch failure area.

此外，由於該些發光二極體單元13是採用以白光為主的側向投射，所以當該觸控板1被點亮時是呈現全部範圍的單色發光，而被關閉時則是一起變暗。可知，這樣的光源並無法進行多樣化的顯示變化應用。或者，在特定的驅動控制設計下可使該觸控板1做到某幾行的觸控按鍵110呈現為發光，而某幾行的觸控按鍵110呈現為不發光的效果，例如數字鍵7、4、1和一半的數字鍵0呈現為發光，而其他則呈現為不發光，但這樣的設計會增加電路的複雜度，也有相對較高的製造成本。In addition, since the light-emitting diode units 13 use white light as the main side projection, when the touch panel 1 is turned on, it exhibits a full range of monochromatic light, and when it is turned off, it changes together. dark. It can be seen that such a light source cannot be used for various display changing applications. Alternatively, under a specific driving control design, the touch panel 1 can be made to emit light on the touch keys 110 in certain rows, while the touch keys 110 in certain rows do not emit light, for example, the number key 7 , 4, 1, and half of the number keys 0 appear to be illuminated, while others are rendered non-illuminated, but such a design will increase the complexity of the circuit and have a relatively high manufacturing cost.

是以，如何改善此一習知觸控板的設計以提供更有效的觸控感應和更多樣的顯示效果，便為本案發展的主要目的。Therefore, how to improve the design of the conventional touch panel to provide more effective touch sensing and more diverse display effects is the main purpose of the development of this application.

本發明之目的在於提出一種具按鍵輸入功能的觸控板。該觸控板採用了微型發光二極體作為光源的設置，因此可有效縮小整體裝置的厚度，並能達到多樣化的顯示變化應用以及減少感應失效的問題等技術增進。The purpose of the present invention is to provide a touch panel with a key input function. The touch panel adopts miniature light-emitting diodes as the light source, so it can effectively reduce the thickness of the whole device, and can achieve various display change applications and reduce the problem of induction failure and other technical improvements.

本發明為一種具按鍵輸入功能的觸控板，包含有：一印刷電路板、多個微型發光二極體單元以及一導光模組。該印刷電路板具有一第一表面和一觸控感應層，該觸控感應層形成於該第一表面上，且該觸控感應層具有一觸控感應範圍。該些微型發光二極體單元相應於該觸控感應範圍而設置於該第一表面上。該導光模組設置於該觸控感應層與該些微型發光二極體單元上，且該導光模組包含有一導光板，該導光板具有多個相應於該些微型發光二極體單元的凹槽，用以容置該些微型發光二極體單元。其中，該觸控感應層具有多個觸控感應單元，該些觸控感應單元構成多個觸控感應區域，每一觸控感應區域形成代表一預設內容的一觸控按鍵。The present invention is a touch panel with key input function, comprising: a printed circuit board, a plurality of miniature light emitting diode units and a light guide module. The printed circuit board has a first surface and a touch sensing layer, the touch sensing layer is formed on the first surface, and the touch sensing layer has a touch sensing range. The micro LED units are disposed on the first surface corresponding to the touch sensing range. The light guide module is disposed on the touch sensing layer and the miniature light emitting diode units, and the light guide module includes a light guide plate, the light guide plate has a plurality of corresponding to the miniature light emitting diode units grooves for accommodating the miniature light-emitting diode units. The touch sensing layer has a plurality of touch sensing units, the touch sensing units form a plurality of touch sensing areas, and each touch sensing area forms a touch button representing a preset content.

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進行詳細說明。In order to have a better understanding of the above and other aspects of the present invention, the following embodiments are given and described in detail with the accompanying drawings.

以下係提出實施例進行詳細說明，實施例僅用以作為範例說明，並不會限縮本發明欲保護之範圍。此外，實施例中之圖式係省略不必要或以通常技術即可完成之元件，以清楚顯示本發明之技術特點。The following examples are provided for detailed description, and the examples are only used as examples to illustrate, and do not limit the scope of protection of the present invention. In addition, the drawings in the embodiments omit unnecessary elements or elements that can be completed with ordinary techniques, so as to clearly show the technical characteristics of the present invention.

現以一實施例進行本發明所提出之具按鍵輸入功能的觸控板的實施說明。請同時參見圖2至圖3B，其中圖2為本發明的一觸控板2的側面設置示意圖；圖3A為該觸控板2的部分元件的平面設置示意圖；圖3B為圖3A的局部放大示意圖。The implementation of the touch panel with the key input function proposed by the present invention will now be described with an embodiment. Please refer to FIG. 2 to FIG. 3B at the same time, wherein FIG. 2 is a schematic diagram of a side configuration of a touch panel 2 of the present invention; FIG. 3A is a schematic diagram of a plan configuration of some components of the touch panel 2 ; FIG. 3B is a partial enlarged view of FIG. 3A Schematic.

如圖2所示，本發明的該觸控板2主要包含有一印刷電路板20、多個微型發光二極體單元23以及一導光模組2a，其中該印刷電路板20具有一第一表面201和一觸控感應層21，該觸控感應層21形成於該第一表面201上。其次，該些微型發光二極體單元23是設置於該第一表面201上，而該導光模組2a是設置於該觸控感應層21與該些微型發光二極體單元23上。As shown in FIG. 2, the touch panel 2 of the present invention mainly includes a printed circuit board 20, a plurality of miniature light emitting diode units 23 and a light guide module 2a, wherein the printed circuit board 20 has a first surface 201 and a touch sensing layer 21 formed on the first surface 201 . Next, the micro LED units 23 are disposed on the first surface 201 , and the light guide module 2 a is disposed on the touch sensing layer 21 and the micro LED units 23 .

於此實施例中，該導光模組2a包含有一導光板22、一遮罩層24以及一擴散層25。從下而上依序是該導光板22相應各微型發光二極體單元23而設置於該觸控感應層21上，該遮罩層24設置於該導光板22上，而該擴散層25設置於該遮罩層24上。該導光板22可將點光源的光線加以擴散成面光源，而該遮罩層24上形成有多種預設內容的透光圖案(即數字或符號)，而該擴散層25則可對透射光線做進一步的均勻化。該導光模組2a的功能與習知技術類似，故於此不多贅述。In this embodiment, the light guide module 2 a includes a light guide plate 22 , a mask layer 24 and a diffusion layer 25 . From bottom to top, the light guide plate 22 is disposed on the touch sensing layer 21 corresponding to each micro light emitting diode unit 23 , the mask layer 24 is disposed on the light guide plate 22 , and the diffusion layer 25 is disposed on the mask layer 24 . The light guide plate 22 can diffuse the light of the point light source into a surface light source, and the mask layer 24 is formed with light-transmitting patterns (ie numbers or symbols) with various preset contents, and the diffusion layer 25 can be used to transmit light. Do further homogenization. The function of the light guide module 2a is similar to that of the prior art, so it is not repeated here.

本發明的其一特徵在於，光源所採用的是微型化的發光二極體(Mini LED或稱Micro LED)，其尺寸是數個量級差距地小於傳統的發光二極體(LED)。就目前技術來說，習用發光二極體(LED)每顆尺寸在長度或寬度上最大可達到約5毫米(mm)；而微型發光二極體(Mini LED)又可稱為次毫米發光二極體，也就是其尺寸可小至約100微米(μm)(即0.1毫米(mm))的程度，故本發明的微型發光二極體單元23明顯尺寸較小。One of the features of the present invention is that the light source adopts a miniaturized light emitting diode (Mini LED or Micro LED), and its size is smaller than a traditional light emitting diode (LED) by several orders of magnitude. As far as current technology is concerned, each conventional light-emitting diode (LED) can be up to about 5 millimeters (mm) in length or width; and miniature light-emitting diodes (Mini LEDs) can also be called sub-millimeter light-emitting diodes. The polar body, that is, the size can be as small as about 100 micrometers (μm) (ie, 0.1 millimeter (mm)), so the micro LED unit 23 of the present invention is significantly smaller in size.

此外，該些微型發光二極體單元23可採用彩色顯示設計，即其一個單元就具有RGB三原色的模組，使得該些微型發光二極體單元23不止可運作背光功能，還可運作全彩顯示功能，並能根據需求來顯示出相同或不同的顏色。In addition, the micro LED units 23 can adopt a color display design, that is, one unit has a module of three primary colors of RGB, so that the micro LED units 23 can not only operate the backlight function, but also operate the full color. Display function, and can display the same or different colors according to requirements.

在該些微型發光二極體單元23的小尺寸條件下，如圖2所示，該導光板22具有多個相應於該些微型發光二極體單元23的凹槽220，用以容置該些微型發光二極體單元23。進一步來說，為減少對觸控感應上的影響，該些凹槽220的形狀、尺寸或所形成的位置、數目等皆與該些微型發光二極體單元23的條件相互對應，以使該些微型發光二極體單元23能吻合地組裝和置放於相應的凹槽220中，且該導光板22可選取適當厚度的材料進行製作。Under the condition of the small size of the micro LED units 23, as shown in FIG. 2, the light guide plate 22 has a plurality of grooves 220 corresponding to the micro LED units 23 for accommodating the micro LED units 23. some miniature light-emitting diode units 23 . Further, in order to reduce the influence on the touch sensing, the shape, size or the formed position and number of the grooves 220 are all corresponding to the conditions of the micro LED units 23, so that the Some miniature light-emitting diode units 23 can be assembled and placed in the corresponding grooves 220, and the light guide plate 22 can be made of materials with appropriate thickness.

因此，本發明的另一特徵在於，由於該些微型發光二極體單元23的小尺寸特性，使得所容置的該些凹槽220的尺寸亦不大，從而避免了先前技術需要形成整個貫穿的缺口才有足夠的空間、尺寸來容置習用的發光二極體單元。就另一角度來說，本發明的該導光板22的厚度以至於是該導光模組2a整體的厚度都可較先前技術更加縮小，因而減少了光線在層疊結構中所可能出現的干涉問題。Therefore, another feature of the present invention is that due to the small size of the miniature light-emitting diode units 23, the size of the grooves 220 to be accommodated is not large, thereby avoiding the need to form the entire through-hole in the prior art. There is enough space and size to accommodate the conventional light-emitting diode unit. On the other hand, the thickness of the light guide plate 22 and the overall thickness of the light guide module 2a of the present invention can be reduced more than that of the prior art, thereby reducing the possible interference problem of light in the laminated structure.

在圖2中還示意了本發明的該觸控板2還包含有設置於該導光模組2a的該擴散層25上的一透光片26，用以提供使用者手指的接觸及保護下方的結構。該透光片26可例如為玻璃。可以理解的是，本發明的該導光模組2a與該透光片26的設置方式並不限於此實施例，而可做其他進一步的變化。例如於其他實施方式中可將透光片整合在導光模組中，或是可視需求省略其中的擴散層，或是可將遮罩層與擴散層整合成同一元件等，亦能達成與本實施例相同或類似的功效。FIG. 2 also shows that the touch panel 2 of the present invention further includes a light-transmitting sheet 26 disposed on the diffusion layer 25 of the light guide module 2a to provide contact with the user's fingers and protect the bottom Structure. The light-transmitting sheet 26 can be, for example, glass. It can be understood that the arrangement of the light guide module 2a and the light-transmitting sheet 26 of the present invention is not limited to this embodiment, and other further changes can be made. For example, in other embodiments, the light-transmitting sheet can be integrated into the light guide module, or the diffusing layer can be omitted according to requirements, or the mask layer and the diffusing layer can be integrated into the same element, etc. Example with the same or similar effect.

另外，如圖3A所示，該觸控感應層21具有一觸控感應範圍21a，而該些微型發光二極體單元23是相應於該觸控感應範圍21a設置於該第一表面201上。詳細來說，該觸控感應層21具有多個觸控感應單元211，且這些觸控感應單元211呈現出陣列形式，而所述的觸控感應範圍21a即為由該些觸控感應單元211所組成能對使用者手指進行接觸感應的範圍。In addition, as shown in FIG. 3A , the touch sensing layer 21 has a touch sensing area 21a, and the micro LED units 23 are disposed on the first surface 201 corresponding to the touch sensing area 21a. Specifically, the touch-sensing layer 21 has a plurality of touch-sensing units 211 , and these touch-sensing units 211 are in the form of arrays, and the touch-sensing range 21 a is formed by the touch-sensing units 211 . The formed range can sense the touch of the user's finger.

於此實施例中，如圖3A所示，該些微型發光二極體單元23的設置方式是於該觸控感應範圍21a中以呈現均勻分布的方式作設計，即大致是使兩兩相鄰的微型發光二極體單元23具有相同的間距，以達到均勻面光源的效果。可以理解的是，本發明的微型發光二極體單元23的設置方式並不限於此實施例，而可做其他進一步的變化；例如於其他實施方式中可採用不均勻分布的方式設置微型發光二極體單元。In this embodiment, as shown in FIG. 3A , the arrangement of the micro LED units 23 is designed to be uniformly distributed in the touch sensing area 21 a, that is, approximately two are adjacent to each other. The miniature light-emitting diode units 23 have the same spacing to achieve the effect of a uniform surface light source. It can be understood that the arrangement of the miniature light-emitting diode unit 23 of the present invention is not limited to this embodiment, and other further changes can be made; Polar body unit.

由此可知，本發明的又一特徵在於，在小尺寸特性下的各微型發光二極體單元23可分別設置或是可設置在所需的或指定的位置上，而能不受限於習用的發光二極體單元僅能放置於觸控板靠近印刷電路板的一側的設計限制邊。From this, it can be seen that another feature of the present invention is that each miniature light-emitting diode unit 23 under the characteristic of small size can be arranged separately or can be arranged at a required or designated position, and is not limited to the conventional one. The LED unit can only be placed on the design limit edge of the side of the touch panel close to the printed circuit board.

再者，如圖3B所示，其中每一觸控感應單元211包含有一感應電路211a和一驅動電路211b，且該感應電路211a與該驅動電路211b呈現交叉設置。詳細來說，整個該觸控感應層21是由多條驅動線(Tx)和多條感應線(Rx)從水平方向與垂直方向在不同平面上相互交叉所構成。每一驅動線有一驅動線圖案，每一感應線有一感應線圖案，而每一觸控感應單元211即為該驅動線圖案與該感應線圖案形成交叉的部分。關於驅動線圖案與感應線圖案的設計為習知技術，且視應用的不同亦有各種不同的圖案設計，故於此不多贅述。Furthermore, as shown in FIG. 3B , each touch sensing unit 211 includes a sensing circuit 211a and a driving circuit 211b, and the sensing circuit 211a and the driving circuit 211b are arranged in an intersecting manner. In detail, the entire touch sensing layer 21 is formed by a plurality of driving lines (Tx) and a plurality of sensing lines (Rx) crossing each other on different planes from the horizontal direction and the vertical direction. Each driving line has a driving line pattern, each sensing line has a sensing line pattern, and each touch sensing unit 211 is a portion where the driving line pattern and the sensing line pattern intersect. The design of the driving line pattern and the sensing line pattern is a conventional technology, and there are various pattern designs depending on the application, so the details are not described here.

承上所述，於此實施例中，該些微型發光二極體單元23的進一步設置方式是將其設置於例如圖3B中的任兩觸控感應單元211、211’的驅動電路211b、211b’之間。詳細來說，觸控感應單元211是利用所分布的感應電路211a與驅動電路211b之間的電容值變化情形來提供被觸碰與否的判斷。因此，在小尺寸的條件下，就可將該些微型發光二極體單元23設置在這些電路的間隙之中，或是設置在這些電路未作用到的地方。Based on the above, in this embodiment, the micro LED units 23 are further arranged in the driving circuits 211b and 211b of any two touch sensing units 211 and 211 ′ shown in FIG. 3B , for example. 'between. In detail, the touch sensing unit 211 utilizes the change of the capacitance value between the distributed sensing circuit 211a and the driving circuit 211b to provide the judgment of whether the touch sensing unit 211 is touched or not. Therefore, under the condition of small size, the micro light-emitting diode units 23 can be arranged in the gaps of these circuits, or arranged in places where these circuits are not used.

因此，如圖3B所示，在該微型發光二極體單元23的設置位置上，兩驅動電路211b、211b’係呈現有相應的讓位，以供該微型發光二極體單元23設置於該第一表面201上。可以理解的是，圖3B中的感應電路211a、211a’、驅動電路211b、211b’僅為概示，其具體的圖案內容可再進一步設計。換句話說，本發明亦可將微型發光二極體單元23設置於變化設計後的各驅動電路本身所呈現疏密分布的間隙中，或可設置於任兩觸控感應單元的感應電路之間。Therefore, as shown in FIG. 3B , at the installation position of the micro LED unit 23 , the two driving circuits 211 b and 211 b ′ have corresponding vacancies for the micro LED unit 23 to be installed in the micro LED unit 23 . on the first surface 201 . It can be understood that the sensing circuits 211a, 211a', and the driving circuits 211b, 211b' in FIG. 3B are only schematic representations, and the specific pattern content thereof can be further designed. In other words, in the present invention, the miniature light-emitting diode unit 23 can also be arranged in the gap of the density distribution of each driving circuit itself after the changed design, or can be arranged between the sensing circuits of any two touch sensing units .

由於微型發光二極體單元23的尺寸較小，所以各微型發光二極體單元23的大部分或全部結構不會有重疊或遮蔽相關電路的情形。再更進一步來說，本發明的各微型發光二極體單元23的兩連接點在該第一表面201上的設置，並不會有跨越鄰近的感應電路211a的情形，也就是兩連接點之間不會被感應電路211a穿越，從而能對觸控感應造成最小的影響，也不需要為了焊接光源而將相關的感應電路挖空。Due to the small size of the micro LED units 23 , most or all of the structures of each micro LED unit 23 will not overlap or obscure related circuits. Still further, the arrangement of the two connection points of each miniature light-emitting diode unit 23 on the first surface 201 of the present invention does not cross the adjacent sensing circuit 211a, that is, between the two connection points. The space will not be traversed by the sensing circuit 211a, so that the touch sensing can be minimally affected, and there is no need to hollow out the relevant sensing circuit for welding the light source.

是以，本發明的又一特徵在於，在小尺寸特性下，各微型發光二極體單元23的設置與分布可大幅地降低對觸控感應單元211所造成的破壞，避免了習用的發光二極體單元設置在觸控感應單元上時所造成的感應失效的問題。再者，即使所應用的感應線圖案被設計的愈密集，微型發光二極體單元23也不會或可極小地對其造成重疊或遮蔽，使得後續所需要進行的感應補償或感應調整等應用的程度亦不至於過大。Therefore, another feature of the present invention is that, under the characteristics of small size, the arrangement and distribution of each micro LED unit 23 can greatly reduce the damage to the touch sensing unit 211, and avoid the conventional LED light emitting diode. The problem of sensing failure caused when the pole body unit is arranged on the touch sensing unit. Furthermore, even if the applied sensing line patterns are designed more densely, the micro LED units 23 will not or can cause little overlap or shading thereof, so that subsequent applications such as sensing compensation or sensing adjustment need to be performed. is not too great.

在圖2中還示意了本發明的該觸控板2還包含有一控制器27，而該印刷電路板20具有一第二表面202和形成在內部的多個穿孔200，該控制器27是設置於該第二表面202上。該控制器27是作為控制各微型發光二極體單元23發光與否，或是作為接收各觸控感應單元211的感應結果的主要單元。由於該第一表面201的空間主要是作為電路設計之用，故將該控制器27設置在與該第一表面201為相對一側的該第二表面202上，而該些微型發光二極體單元23和該些觸控感應單元211可經由延伸的導線與該些穿孔200電連接至該控制器27。FIG. 2 also shows that the touch panel 2 of the present invention further includes a controller 27, and the printed circuit board 20 has a second surface 202 and a plurality of through holes 200 formed inside, the controller 27 is provided on the second surface 202 . The controller 27 is used as a main unit for controlling whether each micro LED unit 23 emits light or not, or as a main unit for receiving the sensing results of each touch sensing unit 211 . Since the space of the first surface 201 is mainly used for circuit design, the controller 27 is disposed on the second surface 202 opposite to the first surface 201 , and the miniature light-emitting diodes The unit 23 and the touch sensing units 211 can be electrically connected to the controller 27 through the extending wires and the through holes 200 .

請參見圖4，為該觸控板2進行一觸控應用的示意圖。如圖3A和圖4所示，該些觸控感應單元211構成多個觸控感應區域210，也就是將陣列形式的該些觸控感應單元211依據位置與範圍再劃分成數個區域，而構成該些觸控感應區域210。每一觸控感應區域210形成代表一預設內容的一觸控按鍵以提供使用者觸控輸入。類似於先前技術的圖1A，該預設內容即所述的數字、符號或做退格(Backspace)、輸入(Enter)等功能。Please refer to FIG. 4 , which is a schematic diagram of the touch panel 2 performing a touch application. As shown in FIG. 3A and FIG. 4 , the touch sensing units 211 form a plurality of touch sensing areas 210 , that is, the touch sensing units 211 in the form of an array are further divided into several areas according to their positions and ranges to form a plurality of touch sensing areas 210 . The touch sensing areas 210 . Each touch sensing area 210 forms a touch key representing a predetermined content to provide user touch input. Similar to FIG. 1A of the prior art, the preset content is the aforementioned numbers, symbols, or functions such as Backspace and Enter.

於此實施例中，每一觸控感應區域210所相應的觸控感應單元211為複數個，或者可能有一觸控感應單元211相應至兩個以上的觸控感應區域210，而每一觸控感應區域210所相應的微型發光二極體單元23則可設計為至少一個，這些設計可視所需的觸控按鍵數目和其分區大小而定。可以理解的是，每一觸控感應區域210所相應的微型發光二極體單元23及觸控感應單元211在位置上是彼此相鄰，而此一設計可預先由程式人員作規劃，並將相關的位置資訊和所分配的結果一起記錄在該控制器27可存取的記憶體中。In this embodiment, the touch sensing units 211 corresponding to each touch sensing area 210 are plural, or there may be one touch sensing unit 211 corresponding to more than two touch sensing areas 210, and each touch sensing unit 211 may correspond to more than two touch sensing areas 210. At least one micro LED unit 23 corresponding to the sensing area 210 can be designed, and the design may be determined by the number of touch keys required and the size of the partition. It can be understood that the micro LED unit 23 and the touch sensing unit 211 corresponding to each touch sensing area 210 are adjacent to each other in position, and this design can be planned by the programmer in advance, and the The associated position information is recorded in memory accessible to the controller 27 along with the assigned results.

是以，本發明的又一特徵在於，小尺寸特性的微型發光二極體單元23除可作分別設置之外，該控制器27還可藉由獨立線路而分別對每一微型發光二極體單元23進行發光與否的控制。舉例來說，該控制器27可因應該些觸控感應單元211的被觸控情形而使與被觸控的觸控感應單元211相應的微型發光二極體單元23發光或不發光。或者，該控制器27可使該些觸控感應區域210所相應的微型發光二極體單元23分別以相同或不同顏色進行發光。Therefore, another feature of the present invention is that in addition to the miniature light-emitting diode units 23 with small size characteristics that can be arranged separately, the controller 27 can also be used for each micro-LED by independent circuits. The unit 23 controls whether or not to emit light. For example, the controller 27 can cause the micro LED units 23 corresponding to the touched touch sensing units 211 to emit light or not to emit light according to the touched situations of the touch sensing units 211 . Alternatively, the controller 27 can make the micro LED units 23 corresponding to the touch sensing areas 210 emit light in the same or different colors, respectively.

如圖4所示，此一觸控應用可為當該觸控板2被啟動了按鍵輸入功能時，會先使所有的微型發光二極體單元23皆發光。但當使用者開始點按其中一觸控感應區域210(即觸控按鍵)時，例如圖4中的數字鍵5，可設計僅使被點按到的該觸控感應區域210(即觸控按鍵)所相應的微型發光二極體單元23呈現不發光，甚或是可呈現出有別於其他觸控感應區域210之發光顏色的其他顏色，以明確提示使用者相應的觸控按鍵已成功地被點按，且相應的預設內容也已同時完成輸入。As shown in FIG. 4 , such a touch application may firstly cause all the micro LED units 23 to emit light when the touch panel 2 is activated with a key input function. However, when the user starts to click one of the touch-sensitive areas 210 (ie, touch buttons), such as the number key 5 in FIG. The corresponding miniature light-emitting diode unit 23 of the button) does not emit light, or may even show other colors that are different from the light-emitting colors of other touch sensing regions 210, so as to clearly indicate to the user that the corresponding touch button has been successfully is clicked, and the corresponding preset content has also been entered at the same time.

由此可知，本發明的觸控板2在進行按鍵輸入功能時可呈現出多樣化的顯示變化應用，不但可以增加視覺上的觀看效果，還能夠提供人機互動的操作感，並將使用者的觸控結果即時反饋給使用者得知。當然，本發明的顯示變化應用並不限於上述舉例說明，而是可依需求再作其他的設計。例如，可設計在按鍵輸入功能一被啟動時，各觸控感應區域210(即觸控按鍵)就已呈現出不同的顏色；或者，可設計各觸控感應區域210(即觸控按鍵)會隨著時間不斷在變化顏色。It can be seen that the touch panel 2 of the present invention can present a variety of display and change applications when performing the key input function, which can not only increase the visual viewing effect, but also provide a human-computer interaction operation sense, and make the user feel comfortable. The touch result is immediately fed back to the user. Of course, the application of the display change of the present invention is not limited to the above examples, and other designs can be made according to requirements. For example, when the key input function is activated, each touch sensing area 210 (ie, touch keys) can be designed to show different colors; or, each touch sensing area 210 (ie, touch keys) can be designed Changing colors over time.

本發明雖然採用了微型發光二極體單元23而對觸控感應造成最小影響的效果，但仍有可能出現小部分遮蔽到電路的情形，而這是可再透過韌體或執行應用程式的方式進行觸控參數的補償或調整來改善。舉例來說，可設計由該控制器27對全部的觸控感應單元211持續進行掃描，並根據一電容值門檻值針對需要被校正的觸控感應單元211進行電容值調整。Although the present invention adopts the miniature light-emitting diode unit 23 to minimize the impact on the touch sensing, it is still possible that a small part of the circuit is shielded, and this is the way to pass the firmware or execute the application program. Compensate or adjust touch parameters to improve. For example, the controller 27 can be designed to continuously scan all the touch sensing units 211 , and adjust the capacitance value of the touch sensing unit 211 to be calibrated according to a capacitance value threshold.

詳細來說，無論是無觸控或是有觸控狀態，設置微型發光二極體單元23可能會造成該處相應的觸控感應單元211的電容值下降，而不受微型發光二極體單元23影響的觸控感應單元211的感應結果則可被定義為該電容值門檻值。是以，由該控制器27將有感應失效問題的觸控感應單元211的感應結果朝著該電容值門檻值的大小作校正後，就可獲得有效的改善。In detail, regardless of whether there is no touch or a touch state, the setting of the micro LED unit 23 may cause the capacitance value of the corresponding touch sensing unit 211 there to decrease, which is not affected by the micro LED unit. The sensing result of the touch sensing unit 211 affected by 23 can be defined as the capacitance threshold. Therefore, after the controller 27 corrects the sensing result of the touch sensing unit 211 having the sensing failure problem toward the capacitance value threshold, an effective improvement can be obtained.

綜上所述，本發明所提出的具按鍵輸入功能的觸控板相較於先前技術可達到以下幾點的技術增進：其一，本發明採用微型發光二極體，使得導光板在所組裝的位置上不必形成整個貫穿的缺口，不但減少了光線的干涉問題，也能有效縮小整體裝置的厚度；其二，本發明可將微型發光二極體單元設置在觸控感應範圍內的任何位置上，並可單獨地對其進行發光與否或顯示顏色的控制，而能達到多樣化的顯示變化應用；其三，本發明的微型發光二極體單元不會對感應電路造成顯著的破壞，從而能減少感應失效的問題，即使有需要進行補償或調整，其程度亦遠小於設置習用發光二極體單元時的情形。To sum up, compared with the prior art, the touch panel with key input function proposed by the present invention can achieve the following technical improvements: First, the present invention adopts miniature light emitting diodes, so that the light guide plate is assembled in the assembled It is not necessary to form the entire penetrating notch at the position of the micro light emitting diode, which not only reduces the interference problem of light, but also effectively reduces the thickness of the whole device; secondly, the present invention can set the micro light-emitting diode unit at any position within the touch sensing range It can be independently controlled whether it emits light or not or the display color, so as to achieve a variety of display changes and applications; thirdly, the miniature light-emitting diode unit of the present invention will not cause significant damage to the induction circuit, Thereby, the problem of induction failure can be reduced, and even if compensation or adjustment is required, the extent is far less than that in the case of conventional light-emitting diode units.

是故，本發明能有效解決先前技術中所提出之相關問題，而能成功地達到本案發展之主要目的。Therefore, the present invention can effectively solve the related problems raised in the prior art, and can successfully achieve the main purpose of the development of this case.

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。Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

1:觸控板 10:印刷電路板 110:觸控按鍵 111:觸控感應單元 12:導光板 120:缺口 13:發光二極體單元 14:遮罩層 15:擴散層 16:透光片 A:上緣部分 2:觸控板 2a:導光模組 20:印刷電路板 200:穿孔 201:第一表面 202:第二表面 21:觸控感應層 21a:觸控感應範圍 210:觸控感應區域 211、211’:觸控感應單元 211a、211a’:感應電路 211b、211b’:驅動電路 22:導光板 220:凹槽 23:微型發光二極體單元 24:遮罩層 25:擴散層 26:透光片 27:控制器 1: Trackpad 10: Printed Circuit Board 110: Touch keys 111: Touch sensing unit 12: Light guide plate 120: Notch 13: Light-emitting diode unit 14: Mask layer 15: Diffusion layer 16: Translucent sheet A: The upper edge part 2: Trackpad 2a: Light guide module 20: Printed Circuit Board 200: perforated 201: First Surface 202: Second Surface 21: Touch sensing layer 21a: Touch sensing range 210: Touch Sensing Area 211, 211': touch sensing unit 211a, 211a': induction circuit 211b, 211b': drive circuit 22: light guide plate 220: Groove 23: Miniature Light Emitting Diode Unit 24: Mask Layer 25: Diffusion layer 26: Translucent sheet 27: Controller

［圖1A］為習知具按鍵輸入功能的觸控板1的示意圖。［圖1B］為習知的觸控板1的平面設置示意圖。［圖1C］為習知的觸控板1的側面設置示意圖。［圖2］為本發明的觸控板2的側面設置示意圖。［圖3A］為本發明的觸控板2部分元件的平面設置示意圖。［圖3B］為圖3A的局部放大示意圖。［圖4］為本發明的觸控板2進行觸控應用的示意圖 1A is a schematic diagram of a conventional touch panel 1 with a key input function. [ FIG. 1B ] is a schematic diagram of a plane arrangement of a conventional touch panel 1 . [ FIG. 1C ] is a schematic diagram of a side configuration of a conventional touch panel 1 . [ FIG. 2 ] is a schematic diagram of the side setting of the touch panel 2 of the present invention. [ Fig. 3A ] is a schematic diagram of the plane arrangement of some components of the touch panel 2 of the present invention. [ FIG. 3B ] is a partially enlarged schematic view of FIG. 3A . [ FIG. 4 ] is a schematic diagram of the touch control application of the touch panel 2 of the present invention

2:觸控板 2: Trackpad

21:觸控感應層 21: Touch sensing layer

21a:觸控感應範圍 21a: Touch sensing range

211:觸控感應單元 211: Touch sensing unit

22:導光板 22: light guide plate

220:凹槽 220: Groove

23:微型發光二極體單元 23: Miniature Light Emitting Diode Unit

Claims

一種具按鍵輸入功能的觸控板，包含有：一印刷電路板，具有一第一表面和一觸控感應層，該觸控感應層形成於該第一表面上，且該觸控感應層具有一觸控感應範圍；多個微型發光二極體單元，相應於該觸控感應範圍而設置於該第一表面上；以及一導光模組，設置於該觸控感應層與該些微型發光二極體單元上，且該導光模組包含有一導光板，該導光板具有多個相應於該些微型發光二極體單元的凹槽，用以容置該些微型發光二極體單元；其中，該觸控感應層具有多個觸控感應單元，該些觸控感應單元構成多個觸控感應區域，每一觸控感應區域形成代表一預設內容的一觸控按鍵。 A touch panel with key input function, comprising: a printed circuit board with a first surface and a touch sensing layer, the touch sensing layer is formed on the first surface, and the touch sensing layer has a touch sensing area; a plurality of micro light emitting diode units disposed on the first surface corresponding to the touch sensing area; and a light guide module disposed on the touch sensing layer and the micro light emitting units on the diode unit, and the light guide module includes a light guide plate, the light guide plate has a plurality of grooves corresponding to the miniature light emitting diode units for accommodating the miniature light emitting diode units; The touch sensing layer has a plurality of touch sensing units, the touch sensing units form a plurality of touch sensing areas, and each touch sensing area forms a touch button representing a preset content.

如請求項1之具按鍵輸入功能的觸控板，其中該導光模組還包含有：一遮罩層，設置於該導光板上，其上形成有相應於各預設內容的透光圖案；以及一擴散層，設置於該遮罩層上，用以進行透射光線的均勻化。 The touch panel with key input function according to claim 1, wherein the light guide module further comprises: a mask layer disposed on the light guide plate, on which a light transmission pattern corresponding to each preset content is formed ; and a diffusing layer, disposed on the mask layer, for uniformizing the transmitted light.

如請求項1之具按鍵輸入功能的觸控板，還包含有一透光片，該透光片設置於該導光模組上，用以提供使用者手指的接觸。 As claimed in claim 1, the touch panel with a key input function further includes a light-transmitting sheet, which is disposed on the light-guiding module to provide contact with the user's fingers.

如請求項1之具按鍵輸入功能的觸控板，其中每一觸控感應單元包含有一感應電路和一驅動電路，且該感應電路與該驅動電路呈現交叉設置。 The touch panel with key input function according to claim 1, wherein each touch sensing unit includes a sensing circuit and a driving circuit, and the sensing circuit and the driving circuit are arranged in an intersecting manner.

如請求項4之具按鍵輸入功能的觸控板，其中該些微型發光二極體單元設置於任兩觸控感應單元的驅動電路或感應電路之間。 The touch panel with key input function of claim 4, wherein the miniature light emitting diode units are disposed between the driving circuits or the sensing circuits of any two touch sensing units.

如請求項1之具按鍵輸入功能的觸控板，其中該些微型發光二極體單元係於該觸控感應範圍中呈現均勻分布或不均勻分布。 The touch panel with key input function of claim 1, wherein the micro LED units are distributed uniformly or non-uniformly in the touch sensing range.

如請求項1之具按鍵輸入功能的觸控板還包含有一控制器，而該印刷電路板具有一第二表面和多個穿孔，該控制器設置於該第二表面上，且該些微型發光二極體單元和該些觸控感應單元係經由該些穿孔而電連接於該控制器。 As claimed in claim 1, the touch panel with key input function further includes a controller, and the printed circuit board has a second surface and a plurality of through holes, the controller is disposed on the second surface, and the micro-light emitting The diode unit and the touch sensing units are electrically connected to the controller through the through holes.

如請求項7之具按鍵輸入功能的觸控板，其中該控制器係因應該些觸控感應單元的被觸控情形而使與被觸控的觸控感應單元相應的微型發光二極體單元發光或不發光。 The touch panel with key input function of claim 7, wherein the controller is to make the micro light emitting diode units corresponding to the touched touch sensing units due to the touching conditions of the touch sensing units Glow or not glow.

如請求項7之具按鍵輸入功能的觸控板，其中該控制器係使該些觸控感應區域所相應的微型發光二極體單元分別以相同或不同顏色進行發光。 The touch panel with key input function of claim 7, wherein the controller makes the micro LED units corresponding to the touch sensing regions emit light in the same or different colors respectively.

如請求項7之具按鍵輸入功能的觸控板，其中該控制器用以對該些觸控感應單元進行掃描，並根據一電容值門檻值對相應的觸控感應單元的電容值進行調整。 The touch panel with key input function of claim 7, wherein the controller is used to scan the touch sensing units, and adjust the capacitance values of the corresponding touch sensing units according to a capacitance value threshold.