TW201025100A - Optical touch module and touch display apparatus - Google Patents

Abstract

An optical touch module is disposed opposite to a backlight unit which has a plurality of light-emitting elements turned on at different time. The optical touch module includes a plurality of data lines, a plurality of light sensing elements and a position decoding unit. Each of the light sensing units is electrically connected with at least one data line. The position decoding unit is electrically connected with the data lines and receives a light sensing information through each of the data lines, respectively. The light sensing information includes light sensing signals sensed, when each of the light-emitting element is turned on one time at different time, by the light sensing elements electrically connected with the data line. The position decoding unit compares the light sensing information with plural simulation information, or compares the plural light sensing information to produce a pressing position signal.

Description

[0002] The invention relates to a touch module and a touch display device, and more particularly to an optical touch module and a touch display device. [Prior Art] In recent years, touch panels have been widely used in general consumer electronic products, such as mobile communication devices, digital cameras, digital music broadcasters (MP3), personal digital assistants (PDAs), Satellite navigation (GPS), hand-held PC, and even new Ultra Mobile PC (UMPC), etc., and the above touch panels are combined with the display screen to become a touch screen. Commonly used touch panels are classified into resistive, capacitive, sonic, and optical. The following is an optical touch module. A conventional optical touch module is used in combination with a backlight unit, and the backlight unit is opposite to the optical touch module, wherein the optical touch control module has a plurality of light sensing elements, and the light sensing The component converts the sensed light into a signal. When the backlight unit continues to illuminate and the user's finger touches or approaches the optical touch module, since the finger reflects the light* line, the light sensing signal obtained by the light sensing element corresponding to the pressing area is The light sensing signals obtained by the light sensing elements corresponding to the pressing regions are different, whereby the pressing position can be calculated. The manner in which the optical touch module is activated will be further described below. As shown in FIG. 1 , a conventional optical touch module 1 includes a plurality of 6 201025100 sensing units 11 , a plurality of scanning lines SLU 〜 13 , a plurality of data 〜 12 , and a plurality of position decoding units / 4 lines DLu Array - Department / Η 12. The scan line and the data line are I sighed early, and the direction of the scan line is the γ axis. "The direction is the X axis" to the side of the data line

2: unit U and a scan line SLn~13 and a data line DL" '^112' and include a light sensing element 111 and a switch 112. The opening 2 112 is electrically connected to the light sensing component (1), the scanning line and the data line, and when the line transmits the communication number to „112, „_启导导^1~]2^Measure 7"111 and the data line. The light sensing component 111 senses the brightness of the light to rain out of the two-light sensing signal S1, and transmits it to the amplifying element OP"~I2 to the amplifying edge light sensing signal Si via the data line, and then transmits it to the position decoding unit h for decoding for subsequent processing. Get the pressed position.

The scanning material of the optical touch amount 1 is turned on by transmitting the communication number, for example, once in a frame time. When the scan line SLU transmits the communication number to the switch 112, the switch 112 turns on the light sensing 7G piece 111 and the data line DL11, so that the light sensing signal Si of the light sensing element ln can pass through the switch 112, the data line DLu and the amplifying element. Ρ ι Transfer to the position decoding unit pn. Since each of the sensing units 11 corresponds to a specific scan line and data line, the light sensing signal S! transmitted by each sensing unit n can be regarded as having a specific coordinate according to the corresponding scan line and data line. , that is, the Y coordinate can be determined by the scan line, and the X coordinate can be determined by the data line. In addition, the light sensing signal of the light sensing component corresponding to the area in which the user presses the optical touch module 1 is different from the light sensing 7 201025100 signal of the other light sensing component, so by analyzing the light sensing signal, The pressing area can be known. For example, if the light sensing signal transmitted by the light sensing element 111 electrically connected to the scan line SL12& data line DLU is different from other light sensing signals or a reference signal, it can be known that the pressing area is the scanning line SL12& The junction of the data line DLn and, in turn, the pressing coordinates. However, the operation mode of the optical touch module 1 needs to be achieved by scanning lines and switches, and the setting of the scanning lines and switches increases the complexity of the process and leads to a decrease in aperture ratio. ❹ Therefore, how to provide an optical touch module and a touch display device that reduce the complexity of the process and increase the aperture ratio is one of the important topics. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an optical touch module and a touch display device capable of reducing process complexity and increasing aperture ratio. To achieve the above objective, an optical touch module according to the present invention is disposed opposite to a backlight unit, and the backlight unit has a plurality of light-emitting elements that are lit at different times, and the optical touch module includes a plurality of data lines. A plurality of light* sensing elements and a position decoding unit. Each of the light sensing elements is electrically connected to at least one of the wires. The position decoding unit is electrically connected to the data lines, and receives a light sensing information from the data lines. The light sensing information includes the light sensing elements electrically connected to the data lines at different time points of the light emitting elements. The light sensing signal sensed when the light is turned on, the position decoding unit compares the light sensing information with the plurality of analog information or generates a pressing position signal with the light sensing information at 201025100. To achieve the above objective, a touch display device according to the present invention comprises a flat display module and an optical touch module. The flat display module has a plurality of light-emitting elements that are lit at different times. The optical touch module is disposed adjacent to the light emitting elements and includes a plurality of data lines, a plurality of light sensing elements, and a position decoding unit. Each of the light sensing elements is electrically connected to the at least one data line. The position decoding unit is electrically connected to the data lines, and receives a light sensing information from each data line. The light sensing information includes the light sensing elements electrically connected to the data lines, and the light sensing elements are different in the light emitting elements. The position sensing unit compares the light sensing information with the plurality of analog information or the pair of analog sensing information to generate a pressing position signal. According to the above, the decoding unit of the optical touch module and the touch display device according to the present invention is electrically connected to each data line, and the decoding unit compares the light sensing information transmitted by each data line. The coordinates of at least one direction of the pressing area. Moreover, the present invention can obtain coordinates of at least one direction of the pressing area by means of the illuminating element illuminating at different times. The present invention obtains coordinates of the direction by comparing the light sensing information with a plurality of analog information. In this way, the multi-dimensional coordinates of the pressing area can be obtained, and the present invention can achieve the above operation without scanning the components such as the line and the switch, thereby reducing the cost and the process complexity and increasing the aperture ratio. [Embodiment] Hereinafter, a light according to a preferred embodiment of the present invention will be described with reference to the related drawings. 9 201025100 The same components will be described with reference numerals of the same type of touch module and touch display device. As shown, it shows a prior art touch-sensitive 2, silk-type hard-working 2 and -t light unit 3 f = set. The backlight unit 3 has a plurality of different times ^ ^

It:: The light-emitting element is a camping light tube or a light-emitting diode, and the light-emitting element 仏~e is exemplified by a fluorescent tube. In the present embodiment, the light-emitting elements 仏~w are periodically and sequentially illuminated, for example, once in the time of - (d) mame. FIG. 2B is a partial block diagram of the optical touch module 2. As shown in Fig. 2B, the optical touch module 2 has a plurality of data lines DL2i 22, a plurality of optical sensing elements 21, and a position decoding unit p2. The light sensing element 21 is electrically connected to at least the data line DL2^22, and in the present embodiment, one of the light emitting elements 31a to 31e is set to have a direction τ (as shown in FIG. 2A) and each of the data lines DL2i to 22 One of the light sensing elements 21 is connected in a parallel direction. In the present embodiment, the direction τ of the light-emitting elements 31a to 3le and the direction in which the light-sensing elements 21 are disposed are exemplified by the γ-axis. The position decoding unit P2 is electrically connected to the data lines DL21 and DL22, respectively, and receives a light sensing information L2i, L22 from each of the data lines DL2i, DL22. In order to increase the signal strength, the optical touch module 2 of the present embodiment further includes a plurality of amplifying components OP21 and OP22 (such as signal amplifiers), which are respectively electrically connected to the data lines DL21 and DL22 and the position decoding unit p2. between. It should be noted that FIG. 2B shows only two data lines 201025100 DLn, DL22 and four light sensing elements 21 for convenience of description, but in fact, the above elements can be more and arranged in an array. In addition, the position decoding unit & is a position decoding circuit in FIG. 2B. In other embodiments, a plurality of position decoding circuits may be separately provided and electrically connected to the respective data lines. Since the switch and the scan line are not provided in this embodiment, when the light sensing element 21 senses the brightness of the light, the light sensing signal is transmitted via the data lines DLS1, DL22, the amplifying elements ορη, 〇p22 to the position decoding unit. P2. Moreover, the light-emitting elements 31a to 3le are sequentially illuminated. Therefore, when the first one of the light-emitting elements is lit, each of the light-sensing elements 21 senses a brightness and generates a light-sensing signal S2, which is transmitted to the position decoding unit p2. When the light-emitting elements 31a to 31e are sequentially clicked, the light sensing signals and S22 respectively constitute the light sensing information LZ1, La, that is, the light sensing information Lzi, L22 is electrically connected to the data lines DLS1 and DL22. The light sensing elements 21 are sensed by the light sensing signals S21 and S22 when the light emitting elements 31a to 31e are lit once at different times. φ where the optical sensing signal cores 1, S22 are, for example, a current signal or a voltage condition number 'the light sensing information Ln, La is an analog signal. In addition, when the optical touch module 2 is in different use environments, the light sensing signals SZ1 and S22 sensed by the light sensing elements 21 have a difference in signal level, so the light sensing information, La The sensitivity of the optical touch module 2 can be improved by filtering a frequency-dependent DC signal through a low-pass filter circuit (which can include a low-pass filter). Fig. 2C is a view showing the waveform of a light sensing information Lsi, La in a period of time during which the respective light-emitting elements 31a to 31e are lit at different times. 201025100 /, medium, solid curve Ml is the user's untouched (or not close) optical sensing information 2 optical sensing information L2i, & virtual curve M2 for user touch (or A near) optics The light sensing information of the touch module 2 is "丨,." When the user does not touch the optical touch module 2, the solid curve is actually illuminating the components Ma~31e in time. The brightness _ time wave 幵 y and from the solid curve M1, there are five bands that correspond to the five light-emitting elements 31a 31 31e respectively with time. When the user touches the optical touch module 2, the virtual curve M2 shows a peak point Pei, the peak point Pei is the user's pressing (or near) area and the different peak points correspond to different pressing areas, and the peak point Pei shown in Fig. 2C belongs to the second band. That is, close to the light-emitting element 31b, as seen in Fig. 2A, the pressing area is approximately the position of the data line DL^ near the light-emitting element 31b. As described above, the position of the pressed area can be obtained by the light sensing information Lsi, Will explain how the location decoding unit & according to the light sensing information LZ1, La solution The coordinate of the pressed (or near) area is first explained. First, how to analyze the X coordinate of the pressing area is explained. Since the light sensing elements 2 are transmitted through a specific data line DL^'DLu, the light sensing information LZ1, L22 is transmitted. The area pressed by the user will produce a higher brightness, so it can be judged by the light sensing information, [η (this is only two cases - in fact, of course, there can be more light sensing information Alignment) to generate a pressed position signal SP, which includes the X coordinate of the pressing area. For example, 'the area pressed by the user includes the light sensing element 21 connected to the data line, ^21, and does not include the data line. When the light sensing element 21 is connected to the DL 22, the average brightness of the light sensing information 12 201025100 transmitted by the data line DL2! is greater than the average brightness of the light sensing information L 2 2 transmitted by the data line D L2 2 By judging the average brightness of the light sensing information l21 and the light sensing information; l22, it can be known that the data line DLn corresponds to the pressing area, and the information of the X coordinate included in the pressing position signal SP can be determined according to the data line DLu. Use average bright As a basis for judging, it is only an example of two = can be: other judgment basis, for example, using a plurality of analog information as the focus; area and each light sensing information [2] and [22 for judgment. Here, the x coordinate of the domain can be According to the data lines DL2 and DL22, the Y coordinates of the (4) region are determined by position. As shown in Fig. 2B, the simulation information y(i)^m light sensing information includes - and the plural includes the pressure of the pressing region, 1 money SP The press position signal sp is parsed in the X block. In this embodiment, after the center of the Y coordinate is determined, after the bit ', continue the above 'when the X coordinate is based on the data and the plurality of analog information, the solution The unit P2 can compare the light sensing information l21 x coordinates according to the data to the pressing position signal SP. Of course, if the unit P2 is sensible to the light, the Y coordinate is resolved by the position decoding. 22 and a plurality of simulations tfl y (1)

The following detailed description of the bit D 3A shows how the position solver code unit 解析 解析 coordinates. The picture decoding unit ρ2 has a 2: block diagram, as shown in FIG. 3A, the position attack, the position shifting element temporarily stores an element 231, the second temporary element phase shifting element 234, the two-dimensional array 13 201025100, the accumulating element 23 7 And a pair of column elements 235, a multiplying element 236 element 238. 3A, 3B, and 3C, FIG. 3B shows the luminance_position waveform when the light-emitting elements 31a to 3le are sequentially turned on, and the luminance-time waveforms when the light-emitting elements 31a to 31e are sequentially turned on are shown. The analog information y(1) can be obtained based on the luminance_position waveform (as shown in Fig. 3B) and the luminance-time waveform (shown in Fig. 3C) when the light-emitting elements 31a to 31e are lit. In this embodiment, the analog information y(i) is also compared with the analog signal 2 and the optical sensing information L21. Referring to FIG. 3A and FIG. 3B simultaneously, in the embodiment, the first temporary storage element 231 stores a first real-position waveform A1 of one of the light-emitting elements 31a to 31e. The position shifting element 233 is electrically connected to the first temporary storage element 231, and the first brightness-position waveform A1 is offset by a plurality of times according to the pitch dx of each of the light-emitting elements 31a to 31e, thereby obtaining a plurality of second brightness_position waveforms A2. 〜A5 (shown in FIG. 3B), it is assumed here that the pitch dx of each of the light-emitting elements 31a to 31e is the same. The second luminance_position waveforms A2 to A5 represent the luminance-position waveforms when the light-emitting elements 31b to 31e are turned on. The two-dimensional array element 235 is electrically connected to the position shifting element 233, and obtains a plurality of weight values A1(i) to A5(i) according to a positional parameter i and brightness-position waveforms A1 to A5. The meaning of the weight values Al(i) to A5(i) is as shown in FIG. 3B. 'If the position parameter i is located at the position shown in FIG. 3B, the intersection of the vertical line passing through the position and the respective brightness-position waveforms A1 to A5 is For its weight values Al(i)~A5(i), for example, in FIG. 3B, the weight values A4(i) and A5(i) of the luminance-position waveforms A4 and A5 are all zero; of course, the calculation of the above weight values 14 201025100 For illustrative purposes only. Referring to FIG. 3A and FIG. 3C simultaneously, the second temporary storage element 232 stores the -th brightness_time waveform of the light-emitting elements 3a to 3ie. The phase shifting element 234 is electrically connected to the second temporary storage element M2, and the first time wave is turned on. R1 is also shifted by a plurality of times according to the difference in lighting time of each of the light-emitting elements to obtain a plurality of second brightnesses. The time waveform R2 to (as shown in FIG. 3C) is assumed to be the same as the point = day-to-day difference dt of each of the light-emitting elements 31a to 31e. The second luminance-time waveforms R2 to R5 represent the luminance_time waveform when the light-emitting elements 31b to 31e are turned on. Furthermore, 'multiplication element 4 236 and two-dimensional array element 235 and phase shift

The element 234 is electrically connected, and the weight values A1(i) to A5(i) are multiplied by the brightness and time waveforms R1 to R5, respectively, to generate a plurality of multiplication information J1(i) is (1) ° The multiplying element 236 of an embodiment can have a plurality of multipliers. The post-accumulation component 237 accumulates the multiplication information η(1) to (1) to obtain one of the simulation assets y(i). An example of the simulation information y(i) can be referred to FIG. 3d.

Tfx ° , ''T, above can be obtained as follows: ^ Rl+ Α2(〇· ^2 +A3(i)-R3 + A4(i)· R4 + A5(i) R5 Here is the meaning of the positional parameter i. In this embodiment, the positional parameter i may include the position coordinates of the seat r to J in the range of 5, 丨, , , , and the present embodiment includes the Y-axis 1 A. For example, the optical touch module 2 is divided into 100 73 according to the γ axis. The positional parameter i corresponds to the 100 equal parts, and there are 100 values from small to large. The positional parameter i corresponds to one of them. When aliquoting, it means that the user presses to look at the octagonal temple. When the positional parameter i is different, you can get 15 201025100 different simulation information y(i), for example, Figure 3D shows one of the simulation information y(1) In the 幵V幵, there is - and the peak point PE2, the peak point & corresponds to the value of the position parameter i', that is, the value of the position parameter i is different, the peak point & is also different, and the two correspond. If the position parameter 丨 has 1 value, 100 analog information y(1) is generated. As shown in FIG. 3A, the comparison element 238 and the accumulation element 237 are electrically connected and compared. The information y(i) and the light sensing information are obtained to obtain the pressed position signal Sp. In this embodiment, since the analog information y(i) includes the brightness waveform corresponding to the value of the plurality of bit_f parameters i, t simulates f When the signal y(i) and the light sensing information LZ1 are compared with each other, the light sensing information L2] approximates the brightness waveform of the value of a positional parameter i in the analog information y(i), so that the Y axis of the pressed position can be obtained. For example, referring to FIG. 2C and FIG. 3D, the virtual curve of FIG. 2C can be regarded as a waveform diagram of the light sensing lean Ln, and the peak point Pe represents the Y coordinate of the real user pressing area, and FIG. 3D is based on The simulation information yw obtained by the value of the position parameter ,, the peak point pE2 represents the Y coordinate of the simulated user pressing area, when the two peaks Pei and Pm coincide, or the analog information y(i) and the light sensation When the correlation of the measurement information Lsi is the highest, the Y coordinate of the pressing area can be determined according to the value of the position parameter i of the simulation information y(1). As described above, the position decoding unit j>2 can be obtained according to the light sensing information l2i Pressing the position signal Sp, which contains the pressed (or near) area In addition, the position decoding unit ρ2 shown in FIG. 3A is only an example, and 16 201025100 is not limited to this aspect, for example, if the first temporary storage element 231 stores the light-emitting elements 31a to 31e. All of the brightness_position waveforms A1 to A5, and the second temporary storage unit 232 stores all of the luminance_time waveforms R1 to R5 of the light-emitting elements 31a to 31e, and the position decoding unit A can omit the positional displacement element 233 and the phase deviation. Shift element 234. It is worth mentioning that the simulation information y(1) can be calculated online as described above, or calculated in advance (〇ff_line) and stored in a memory unit (not shown). When the user's finger touches the optical touch control module 2, the position decoding unit P2 compares the light sensing information l21 and L22 with a plurality of analog information y(i) stored in the memory unit, thereby obtaining a press. Position signal SP. For example, the position parameter 丨 includes a coordinate of the γ axis, and the position parameter i of the example of the sample may also include a coordinate of the Z axis (the direction indicating the optical touch module 2 as shown in FIG. 2A ). . In fact, when the distance between the user's hand and the optical touch module 2 is different (ie, the z direction), the light sensing signal sensed by the φ light sensing element 21 is also different, for example, the closer to the optical touch The stronger the light sensing signal sensed by the control module 2'. Therefore, the light sensing information has different brightness-time waveforms corresponding to the distance of the user from the optical touch module 2. In this way, the position decoding unit P2 can compare the plurality of analog information (such as ζ(ι)' shown in FIG. 2B to simulate with a plurality of coordinates in the Z-axis) and the light sensing information, L22' to obtain the Z direction. The coordinates of the coordinates. Of course, the simulation information of this embodiment can also be obtained by simulating the coordinates of the Y axis and the Z axis at the same time, that is, the position parameter i includes the two-dimensional position 17 201025100 coordinates (yz(i) as shown in FIG. 2B). By pressing the light sensing information L2i, L22 and the above-described analog information yz(i), the pressing position signal SP including the pressing (close) coordinate information in the Y-axis and the Z-axis is obtained at one time. In other embodiments, the positional parameter i may further include a three-dimensional position coordinate, that is, the simulation information is simultaneously simulated by the coordinates of the X, Y, and Z axes, by comparing the light sensing information and the above analog information. A pressed position signal Sp including the pressing coordinate information of the X, Y, and Z axes is obtained. 4 is a partial block diagram of an optical touch module 4 10 according to a second preferred embodiment of the present invention. As shown in FIG. 4, unlike the optical touch module 2, the optical touch module 4 further has data lines DL23 and DL24, and each of the light sensing elements 21 is electrically connected to two data lines. The data lines DL21 and DL22 are electrically connected to the photo sensing elements 21 disposed along the Y-axis, and the data lines DL23 and DL24 are electrically connected to the photo sensing elements 21 disposed along the X-axis. It should be noted that FIG. 4 shows only two data lines DL23 and DL24 for convenience of description, and actually there may be more data lines. In addition, the light-emitting elements of the backlight module matched with the optical touch module 4 of the embodiment are exemplified by the light-emitting diodes, and the light-emitting elements are arranged in a two-dimensional array and are lit at different times. For example, it is periodically illuminated in sequence. The position decoding unit P3 is electrically connected to the data lines dl21 to 24, respectively, and receives 'one light sensing information L21 to 24' from each of the data lines DL21 to 24. The following describes how the position decoding unit P3 analyzes the coordinates of the area pressed (or approached) by the user's finger based on the light sensing information 141 to 24. First, how to analyze the X coordinate of the pressing area will be explained. Since the light sensing elements 21 disposed along the Y direction are transmitted through a specific data line 18 201025100 DL21, 〇1^22, the area of the light sensing element _.. m ^ is generated by the user. r is the redundancy of the identity, so it can be determined by the light sensing information 22 to generate a -% position signal, which causes the X-slot containing the area to be moved by the position decoding unit p; determining the light sensing information ^ And the average brightness of the light sensing information La (in this case, only two, in fact, there may be more light sensing information for comparison), you can know which one: the line corresponds to the pressing area, ie Pressing the position signal Sp contains the coordinates of the χ

The information can be determined based on the data lines DL21, DL22 corresponding to the light sensing information having higher brightness. The same principle can be used to resolve the gamma coordinates of the pressed area. Since the light sensing elements 21 disposed along the X direction transmit the light sensing negative signals [η, l24] through a specific data line 23 DL24, the area pressed by the user generates higher brightness, so The light sensing information Lu, L24 can be determined to generate a pressed position signal SP containing the gamma coordinates of the pressed area. That is, the information of the Y coordinate included in the pressed position signal SPI_ can be based on

The data lines DL23 and DL24 corresponding to the higher brightness light sensing information are determined. The Z coordinate of the pressing area of this embodiment can be obtained by comparing the light sensing information L2 丨 24 24 and the analog information z (i) by the position decoding unit p3. Since the technical features of the comparison simulation information z(i) have been described in detail in the first embodiment, they will not be described again. Of course, the simulation information of this embodiment can also be obtained by simulating the coordinates of the X, Y, and Z axes at the same time, that is, the position parameter i includes a three-dimensional position coordinate (such as xyz(i) shown in FIG. 4); The pressing position signal SP1 including the coordinate information of the X, Y, and Z axes (close to) coordinate information is obtained once for the light sensing information L21 to 24 19 201025100 and the above-described analog information xyz(i). It should be noted that the techniques of the first embodiment and the second embodiment for analyzing the pressing area can be used interchangeably to produce more variations. A touch display device 7 of the preferred embodiment of the present invention includes a flat display module 8 and an optical touch module 2 as shown in FIG. The flat display module 8 has a flat display panel 9 and a backlight unit 3 opposite to the flat display panel 9. The backlight unit 3 has a plurality of light-emitting elements that are illuminated at different times. The optical touch module 2 is disposed opposite to the backlight unit 3, wherein the optical touch module 2 is an optical touch panel that can be attached to the flat display panel 9 or integrated into the semiconductor process. In the flat display panel 9, when the flat display panel 9 is a liquid crystal display panel, for example, it can be integrated in a color filter substrate or a thin film transistor substrate. In addition, the touch display device 7 may further include a 1/8 phase delay component (not shown), which is opposite to the optical touch module 2 and can convert the linearly polarized light into a circle. Polarized light to ensure that light does not change its polarization due to reflection. Since the backlight unit 3 and the optical touch module 2 have been described in detail above, they will not be described again. In addition, the optical sensing component 21 of the optical touch panel 2 of the present embodiment can correspond to each pixel setting, for example, a light sensing component 21 corresponds to a pixel setting to improve display quality. It should be noted that the above optical touch module 2 can also be replaced by an optical touch module 4. Furthermore, the present invention is also applicable to a self-luminous display device such as an Organic Electro-Luminescence (OEL) display device 20 201025100. Since such display is performed by displaying a plurality of light-emitting elements in a scanning manner (i.e., lighting at different times), the present invention can also be applied to a light-type display device to achieve the purpose of touch. According to the present invention, the optical touch module and the touch display coding unit of the present invention are connected to each data line, and the light sensing information transmitted by the bucket line is obtained by the decoding unit. Knowing the coordinates of at least one direction of the pressing area. Moreover, the present invention discloses that the coordinates of the illuminating element η which is lit at the same time are less than one direction. The present invention obtains the coordinates of the direction by comparing the plurality of analog information of the light=beacon lock. In this way, the multi-dimensional coordinates and switches and other components of the pressing area can be obtained to achieve the above-mentioned work. The monthly complexity is not required (four) line complexity and the rate is increased, thereby reducing the cost and the process. It is not intended to limit the spirit and material of the present invention, and (4) its unsuccessfulness should be included in the scope of the appended patent application. Effect Modification or Change 'Each [Simple Description] Figure 1 is a conventional optical touch FIG. 2 is a schematic diagram of a first control module and a light unit according to the present invention; and an optical touch diagram 2 is a partial block diagram of the optical touch mode. Figure 2C is a graph of the brightness and time waveforms of the touch (or near) and untouched (or the light sensing information of the non-touch module. The sub-picture is a block diagram of the position decoding unit of Figure 2; '21 201025100 Figure 3B is the hair lance of Figure 2A / 4 _ . The brightness-position waveform diagram of the time, 亮度 is the luminance time waveform diagram when the illuminating element of FIG. 2 is lit; FIG. 3D is a luminance_time waveform diagram of a simulation information; FIG. 4 is a second preferred embodiment of the present invention. A partial block diagram of an optical touch module; and FIG. 5 is a schematic diagram of a touch display device according to a preferred embodiment of the present invention. ❹ [Main component symbol description] 1, 2, 4: optical touch Module 11: sensing unit 111, 21: light sensing element 112: switch 231: first temporary storage element 232: second temporary storage element 2 3 3. position displacement element ❷ 234. phase shifting element 235: two-dimensional array Element 236. Multiplication element '237 ·• Accumulation element 238: Alignment element 3: Backlight unit 31a~31e: Light-emitting element 7: Touch display device 22 201025100 8: Flat display module 9: Flat display panel A1: First brightness - Position waveforms Al(i) to A5(i): Weight values A2 to A5: Second brightness - Position waveform dt: Point time difference dx: Spacing DLu, DL12, DL/21 ~ 24 · Poor line • i : Position Parameter J1(1)~J5(i): Multiplication information L21, L22, L23, L24: Light sensing information

Ml: real curve M2: dashed curve 〇 P11, 〇 Pl2, 〇卩 2.1~24. Amplifying elements P11, Pl2, 卩2, P3: position decoding unit Pei, Pe2: peak point • R1: first brightness-time waveform R2~R5: second brightness-time waveform Si, S21, S22. Light sensing signal 'SLn, SL12, SL13. Scanning line

Sp, SP1: Press the position signal T: Set the direction y(i), z(i), yz(i), xyz(i): analog information 23

Claims (1)

201025100 X. Patent application: 1. The optical touch mode μ is opposite to a backlight unit. The backlight unit has a plurality of light-emitting elements that are lit at different times. The optical touch module includes: a plurality of light sensing elements, each of the light sensing elements is electrically connected to the at least one data line; and a position decoding unit electrically connected to the data lines and receiving a light sensing information from each of the data lines, The light sensing information includes the light sensing signals sensed by the light sensing elements electrically connected to the data lines when the light emitting elements are lit once at different times, and the position decoding unit compares the light sensing signals. Information and a plurality of analog information or a comparison of the light sensing information to generate a pressed position signal. 2 Please refer to the fresh job module described in item 1, wherein the light-emitting elements are periodically lit. 3. The optical touch (four) group as described in item 1 of the scope of the application, wherein the light-emitting elements are sequentially illuminated. 4. For example, please select the optical touch module as described in the patent scope ,1, wherein the light-emitting element such as 5 hai is a fluorescent tube or a light-emitting diode. 5. The optical hard module according to claim 1, wherein one of the light sensing elements electrically connected to each of the data lines is disposed in a direction parallel to a direction in which one of the light emitting elements is disposed. 6. The optical touch module of claim 1, wherein the light sensing information and the analog information are analog signals. The optical touch module of claim 1, wherein the analog information is pre-stored in a memory unit. 8. The optical touch module of claim 1, wherein the simulation information is obtained according to a variable position parameter. 9. The optical touch module of claim 8, wherein the position parameter comprises at least one dimensional position coordinate. 10. The optical touch module of claim 1, wherein the analog information is obtained based on a brightness-position parameter waveform when the light-emitting elements are turned on. 11. The optical touch module of claim 1, wherein the analog information is calculated based on a brightness-time waveform of the light-emitting elements when they are illuminated. 12. The optical touch module of claim 1, wherein the position decoding unit has: a first temporary storage element, storing a first brightness-position waveform of one of the light-emitting elements a second temporary storage element storing a first brightness-time waveform of one of the light-emitting elements; a position-shifting element electrically coupled to the first temporary storage element, and The brightness-position waveform is offset by a plurality of times according to the pitch of each of the light-emitting elements to obtain a plurality of second brightness-position waveforms; a phase shifting element electrically connected to the second temporary storage element, and the first brightness- The time waveform is offset by a plurality of times according to the lighting time difference of each of the light-emitting elements to obtain a plurality of second brightness-time waveforms; 25 201025100 two-dimensional array elements according to a position parameter, the first brightness-position waveform, and the second The luminance-position waveform obtains a plurality of weight values; a multiplication element that multiplies the weight values by the first luminance-time waveform and the second luminance-time waveforms to generate a complex Multiplication sterile information, • an accumulation element, and the other one obtained by multiplying the accumulated information resources such simulation information; and a ratio of the analog information element, other than the information to the light sensing. The optical touch module of claim 1, further comprising: a plurality of amplifying components respectively electrically connected between each data line and the position decoding unit. 14. The optical touch module of claim 1, which is an optical touch panel or integrated in a flat display panel. A touch display device comprising: a flat display module having a plurality of light-emitting beta elements that are illuminated at different times; and an optical touch module disposed adjacent to the light-emitting elements, the light The learning touch module comprises: - a plurality of data lines; a plurality of light sensing elements, each of the light sensing elements being electrically connected to the at least one data line; and a position decoding unit electrically connected to the data lines, and Receiving a light sensing information from each of the data lines, the light sensing information including the light sensing elements sensed by the light sensing elements electrically connected to the data lines of the 26 201025100 when the light emitting elements are lit at different times The signal 'the position decoding unit compares the light sensing information with the plurality of analog information or compares the light sensing information to generate a pressing position signal. 16. The touch display device of claim 15, wherein the light-emitting elements are periodically illuminated. 17. The touch display device of claim 15, wherein the light-emitting elements are sequentially illuminated. 18. The touch display device of claim 15, wherein the illumination element is a fluorescent tube or a light emitting diode. 19. The touch display device of claim 15, wherein one of the light sensing elements electrically connected to each of the data lines is disposed in a direction parallel to a direction in which the light emitting elements are disposed. among them 20. The touch display device as described in claim 15 of the patent application, the light sensing information and the analog information are analog signals. The touch display device described in claim 15 of the patent scope is pre-stored in a memory unit. 22. For example, please refer to the touch display device described in Item 15 (4), wherein the information is obtained based on the calculation of the position parameter that can be changed. The touch display device of claim 22, wherein the positional parameter comprises at least a dimensional position coordinate. According to the touch display device described in Item 15 of the patent, the simulation information is obtained based on the waveform of the brightness of the light-emitting elements when the light-emitting elements are turned on. The touch display device according to claim 15, wherein the analog information is obtained by calculating a brightness·• time waveform when the light-emitting elements are turned on. The touch display device of claim 15, wherein the position decoding unit has: a first temporary storage element, storing a first brightness-position waveform of one of the light-emitting elements; a second temporary storage element storing a first brightness-time waveform of one of the light-emitting elements; a position-displacement element electrically coupled to the first temporary storage element, and the first brightness-position The waveform is offset by a plurality of times according to the pitch of each of the light-emitting elements to obtain a plurality of second brightness-position waveforms; a phase shifting component is electrically connected to the second temporary storage element, and the first brightness-time waveform is based on The illumination time difference of each of the light-emitting elements is offset a plurality of times to obtain a plurality of second brightness-time waveforms; the two-dimensional array element, according to a position parameter, the first brightness-position waveform, and the second brightness-position waveform Obtaining a plurality of weight values; ^ a multiplication element, wherein the weight values are correspondingly multiplied by the first luminance-time-waveform and the second luminance-time waveform to generate a plurality of phases Poor hearing, an accumulation element, and the other one obtained by multiplying the accumulated information resources such simulation information; and a ratio of the analog information element, like the ratio of the light-sensing information. The touch display device of claim 15 , wherein the optical touch module further comprises a plurality of amplifying components respectively electrically connected between the data lines and the position decoding unit. . The touch display device of claim 15, wherein the optical touch module is an optical touch panel or integrated in a flat display panel of the flat display module. 29