TW516017B - Liquid crystal display device - Google Patents

Abstract

In an LCD device, a skew correction signal generating section determines change numbers DRQ1 and DRQ2 regarding voltages V2a and V4a in accordance with display data D, and outputs correction values T1 and T2 indicative of pulse widths for correcting inductive skews. On the other hand, a power source circuit, in response to instruction from an integrated correction signal generation section, outputs a correction-use voltage V2s to the signal-side driving circuit during a first period indicated by a pulse signal S0 for signal dullness correction use and during a period indicated by the correction value Tl, and outputs the correction-use voltage V4s during the first period and during a period indicated by the correction value T2. Consequently, though the power source circuit outputs only the correction-use voltages V2s and V4s as correction-use voltages, fluctuations of RMS values caused by inductive skews and signal dullness can be corrected by differing respective durations of application of the foregoing two. Therefore, display irregularities due to these can be suppressed.

Description

V. Description of the Invention (l) Field of the Invention The present invention relates to a liquid crystal display device, which uses a simple matrix type liquid crystal display panel driven by a voltage averaging method. BACKGROUND OF THE INVENTION Recently, with the popularization of personal computers and word processors, the display device 'should be used to purchase a lightweight and thin battery-driven liquid crystal display device' to replace large-scale CRT (Cathode-Ray- Tube). 々The simple matrix driving method 1 of the driving method of this liquid crystal display device and the active: array driving phase tb, because the pixels arranged in a matrix do not need non-linearity. The comparison is easier to manufacture and can reduce the manufacturing. cost. The above-mentioned liquid crystal display device 1 of the simple matrix driving device 100 is configured as shown in FIG. 1 with a plurality of scanning electrodes and a plurality of signal electrodes γ 1 Ν τ 彳 田 side drive circuit 1 〇3, which are sequentially selected. Scanning power Y is displayed by the power supply circuit 105, and the non-selection voltage V3 is displayed to the non-selection oven B1. The other field electrode Y applies the indicated data from the power supply circuit 105 to each: the signal-side driving circuit 102 responds to the display and the night crystal display surface; and, the signal voltage VMV4 is applied. According to this part (Liri Day Tailiu = Medium, the potential difference between scan electrode I and signal electrode \. \ Pairs r θ Sugawa (1, j)) is applied to both electrodes I to Yeyue Di Liu The pen pressure of 'i' The transmittance of this part changes according to the applied electric voltage. Therefore, by controlling the display state applied to each letter, display ΗΝ, Μ) based on the information shown ^ ^ im !:} Pit1 ^ Yl: ^-1 ^ ^ ^ ^ ^-丄 6〇i7

The crystal display device 100 with 2 basins is increased in accordance with the display capacitance and display area, and the intermodulation distortion depending on the display pattern caused by the dynamic characteristics will be generated, so display unevenness will occur, which will cause the display mouth Shell's tendency to decrease. -it ’? The unevenness of the display in the display pattern-is caused by the signal σ and the unevenness of the shells appearing early. The cause of the uneven brightness can be divided into = 1. The uneven display (uneven brightness) is due to the scanning signal waveform. Induced skew

The cause is that the change in signal voltage is induced on the electrode side of II to 2 and depends on the differential waveform of the liquid crystal capacitor component and the time constant of the resistance component of the signal line and the scanning handle, which induces skew. Trace the waveform of the signal. The second presentation of the X Xishi (uneven case) is caused by the charging and discharging of the liquid crystal capacitor, that is, when the signal voltage changes, the liquid crystal capacitor is charged and discharged depending on the above, so the signal When the applied waveform of the voltage itself is passivated.

: As shown in FIG. 5, when the two main masters want to display a long and long square pattern ΐ ，, the signal electrode Xa shows white pain (red light) on the scanning electrode Yd ~ Y㈣. No. electrode \ indicates a black display (not lit) in all of the scan electrodes Y to γ. However, as shown in Fig. 14 and Fig. 14, the cause of 9: the driving liquid crystal of IL, at the time of scanning the scanning electrode I, the logic of AC to frighten F R is reversed. Therefore, the signal electrode changes from the voltage v 4 to the voltage V 2, and the signal electrode changes from the voltage V 2 to the voltage V 4. At this point, scan

Page 7 16017 V. Description of the invention (3)

The electrode Yc is not selected, the electrode Yc is traced, and a non-selective voltage V3 is applied to the sweep J 2 f electrode I. When the voltage sweep is reversed, electricity is applied to the X side of the signal electrode # ^ Yc facing each other. Induced skew caused by this voltage change: called, from voltage V4-its relative, for example, the number of letter electrodes is N / 10 & the number of tiger electrodes V3 to the voltage V2 side, exchange the letter outline · The time when Yd + 7 is in the area of Xia pressure V3 to voltage 72 is ancient broken + Gan u. Ask the teeth 'D's oblique line, the redundancy of ^, than other white areas (the area containing pixel A, "whitening" phenomenon occurs in the oblique line. In terms of, as shown in Figure 8, In the case of a horizontal image of a column, according to other types of induced distortion, the brightness of the pixels A, B, ′, Θ is lower than that of pixel 8. Because of the same as shown in Figure 17 and applied to Pixels, although there is no different effective value if induced, the effective value of the dynamic voltage is large. So, for example, the diagonal line containing pixel B ^ 516017-I __ 丨 ··· V. Description of the invention (4) It is shown that the polarity of FR will occur in the oblique line. There is no change in the polarity of the FR. Specifically, in the AC X, such as m fi correction-work, the signal is applied to the signal decay. During the scan of the voltage scanning block LP of the scan voltage thunder vva € pole 1, between voltage V2 Tiandian and d Yd + 9 ”, reverse between each mouthful of the old emperor iv ~ V 2 and voltage V4. Even if Jixin scans and scans, on the other hand, the signal is on. On the other hand, in the case of any signal γ Υ 任 一 Ym, it is V2), and it does not change. The voltage of 'b electric b is kept at a fixed value (this electrode is known as γ. During the scanning of the above-mentioned scanning non-selective electrode ㊃3, when Y is applied during the self-scanning scan, the signal electrode X in Dolowen is X ... field; the scanning electrode voltage V2 changes to the voltage V4, τ iU (the voltage applied to the electrode) from the direction of the voltage V4 to induce miscellaneous electricity to the direction of the power plant V2: Health: ;; . For the scanning electrode I, since it is galvanically oriented, the skew shown in FIG. 8 is repeatedly induced in the graph shown in FIG. 8. In this grave reading, the slope of the driving waveform (χ_γ) of scan electrode B in each column of pixel A is shown in Fig. 16, and the driving waveform (aVY) of figure U will be reduced. Also, the pattern B will be reduced if the actual effect value is reduced. Due to the fact that humans have caused ^ e, H 9 due to induced skew, take the average, and the actual value has not decreased slightly. 7. The brightness of pixel A becomes t. The main display is the white area. The pixels M and 17 shown in the white display area, which are left in each other's instructions, return to the area of the oblique line μ I ^. It is not comparable to 516017. V. Description of the invention (5) A case with a grid pattern. That is, in Liu and Gu 4 ^ Zai " 丨 Lu No. FR, the polarity is not reversed

During the period, the voltage Xb applied to the signal electrode χ ^ J u. ^ ^ L is shown in Fig. 18, during the period of scanning the electrode γ ~ γ, in the preparation > -M, 5 AI to the mother Scan a block LP at a voltage of ¥ 2 and

The voltage X of e ^ plane 'is applied to the signal electrode xa, and it is kept at no time even in the case of scanning the scanning electrodes γ to γ and the right land & The value of the chirp lamp (here V 2) has not changed. The scan electrode Yc scans the scan voltage V3. In addition, the display is fortunate as mn private and yemen * As shown in Figure 10, it is a grid pattern of mother and pixel, which is recognized in the scan row, Μ® π is customized, and the adjacent signal electrode X ... The output voltages are reversed to each other, and the transition currents &, ra > ^ i ^ t J ^ ^ cancel each other out. Therefore, the drawing electrode γ is not suitable for the induced distortion caused by the voltage change of the electrode c.

However, when comparing pixel A and pixel B, the voltage of the signal electrode Xa connected to the pixel is not reversed. In contrast, the signal voltage connected to the pixel β is shifted by the heart during each scan. The voltage is reversed, and the charging and discharging to the liquid crystal capacitor are repeated. Therefore, as shown in FIG. 8, the integral waveform passivation due to charge and discharge occurs on the waveform Xb of the signal electrode core. Therefore, the effective value of the driving waveform (Xb-Yc) of pixel B decreases, and the brightness of pixel 8 becomes lower than that of pixel A. Accordingly, although the phase is instructed to be displayed in white, the region of the oblique line shown in Fig. 9 becomes darker than the remaining white display region. Among the above-mentioned first and second display unevennesses, in order to reduce the first display unevenness, for example, this published patent publication "Japanese Unexamined Patent Publication No. 2__89" (publication date: 1990 = January 5) discloses the following structure (hereinafter referred to as "the first i know technology). That is, when the distortion is induced to increase the effective value of the pixel to be corrected, the

> 16017 V. Description of the invention (6) The correction voltage at which the effective voltage is reduced is superimposed on the general output voltage V2 (V4) and output to the signal electrodes Xi ~ XN. When the distortion is induced to reduce the effective value, the correction voltage of the value that increases the effective value is output to the general output voltage V2 (V4). On the other hand, in order to reduce the second significant unevenness, such as the Japanese Laid-Open Patent Publication "Japanese Patent Application Laid-Open No. 8-2 9 2 744" (publication date November 5, 1996), the following structure (hereinafter referred to as " No. 2 Know-how). That is, even if the applied waveform is purified in accordance with the change of the applied voltage in each scanning period, the effective value is reduced. In order to compensate for the decrease in the effective value, a correction voltage that increases the effective value is applied. However, the above-mentioned first conventional technique must set two correction voltages for increasing the effective value and decreasing the effective value on the two voltages (V 2 · V 4) for driving the signal electrode. Therefore, the output potential of the signal electrode requires 6 potentials, which causes problems such as an increase in circuit scale and high manufacturing cost. In addition, either of the first and second conventional techniques mentioned above only corrects the first display unevenness or the second display unevenness ', so it is impossible to correct another display unevenness': it is difficult to maintain the display quality. In addition, in order to correct the uneven display of the first and second displays, the structure of the known technology and the structure of the second known technology are provided independently, which will further increase the circuit scale and increase the manufacturing cost. SUMMARY OF THE INVENTION The present invention was developed by a developer to solve the above-mentioned problems. The purpose of the invention is to realize a liquid crystal display with high display quality without display unevenness at a practically low cost. Device, characterized by, /, ·, night crystal display rice panel, which is connected to a plurality of signal signals crossing each other

Page 11 B16017 V. Description of the invention (7) A liquid crystal layer is provided between the electrode and the plurality of scanning electrodes. Based on the fact that the fresh person showing the displayed image is not expected-the driven person, the signal-side driving mechanism, which will be related to The voltage corresponding to the above-mentioned display data is applied to the above-mentioned signal electrodes. The power for correction is to generate each correction voltage corresponding to the above-mentioned voltage corresponding to the display data on a one-to-one basis. The voltage replaces each of the voltages and outputs it to the signal-side driving mechanism; and a first correction amount determining mechanism that changes the effective voltage value applied to the liquid crystal layer according to the difference between the application periods of the respective correction voltages. The change may be cancelled, and the application period of each of the correction voltages is determined as the correction amount. The change of the effective voltage value is due to the change in potential applied to the signal electrodes by the signal-side driving mechanism. Caused by the skew of the waveforms that occur at each scan electrode. In the above structure, if the induced distortion occurs at the scan electrode, and the actual value of the liquid crystal element corresponding to the intersection of the scan electrode and each signal electrode changes, the first correction amount determination unit will adjust the voltage of each correction voltage. Application period (application time). According to this, the actual value of each liquid crystal element can be adjusted according to the product of the difference between the voltage corresponding to the display data and the voltage for correction and the application period. Here, the application periods of the above-mentioned respective correction voltages are set so as to be able to offset changes in the effective voltage value to the liquid crystal according to the difference between them. Therefore, although the above-mentioned correction power supply only outputs the correction voltage corresponding to each voltage on a one-to-one basis, the liquid crystal display device can suppress uneven brightness of each pixel due to induced distortion (the first display unevenness).

Page 12 516017 Five 'Explanation of Invention (8)'-Therefore, compared with the conventional technique of outputting two correction voltages for each voltage, the circuit structure is simpler and the manufacturing cost is lower. The first display unevenness caused by the induced distortion can be suppressed, and a liquid crystal display device with a high-quality display can be realized. ° The above-mentioned liquid crystal display device may include a second correction amount determining mechanism, which is in the case where the voltage corresponding to the above-mentioned signal electrodes and the display data changes, instead of the voltage, the above-mentioned each One of the correction voltages is controlled by a method of outputting from the signal-side driving mechanism. According to the above structure, in the same situation as above; the voltage of one of the above-mentioned signal electric voltages is output (the voltage is changed, and the second display unevenness caused by the application of the correction voltage caused by the correction of the waveform) Therefore, it is possible to achieve higher display of the other objects of the present invention without adding correction items. Moreover, the advantages of the present invention depend on the poles where the voltage corresponding to the voltage changes, and the above corrections are used for a certain period of time. Therefore, even in the case of passivation due to the waveform of the electrode output corresponding to the display data, the change in the effective voltage value can be offset according to the certain period, and the power source used for waveform passivation can be suppressed forever. The output of xm ^ 〇 mountain < correction of the number of mouths of the liquid crystal display device. Features and advantages can be understood from the π ^ moxibustion post, the following document. Mai Zhi attached to the picture F < from The following is a block diagram of the essential parts that can be clearly understood. FIG. 1 is an embodiment of the present invention.

Page 13 516017 V. Description of the invention (9) Fig. 2 is a block diagram illustrating the structure of the skew correction signal generating section in the above-mentioned liquid crystal display device in more detail. Fig. 3 is a block diagram of a configuration example of a signal-side driving circuit in the liquid crystal display device. FIG. 4 is an operation waveform diagram of the signal-side driving circuit. Fig. 5 is an explanatory diagram of a case where the display example of the liquid crystal display device described above displays a display pattern including vertically long squares. Fig. 6 is an operation waveform diagram of the liquid crystal display device when the display pattern is displayed. FIG. 7 is an explanatory diagram of changes in signal application waveforms caused by different loads. Fig. 8 is an explanatory diagram of a case where the display example of the liquid crystal display device is to display a display pattern including vertically long squares. Fig. 9 is an operation waveform diagram of the liquid crystal display device when the display pattern is displayed. Fig. 10 is an explanatory diagram of a case where the display example of the above-mentioned liquid crystal display device shows a display pattern including a horizontal line pattern at each point. Fig. 11 is an operation waveform diagram of the liquid crystal display device when the display pattern is displayed. Fig. 12 is a diagram illustrating a variation of the above-mentioned liquid crystal display device, in which a signal applied waveform is changed due to different loads. FIG. 13 is a block diagram showing a structure of a main part of a conventional example of a liquid crystal display device. Fig. 14 is a waveform diagram of the operation of the liquid crystal display device when the display pattern shown in Fig. 5 is displayed. FIG. 15 is an explanation of the results of the display pattern displayed by the liquid crystal display device

Page 14 516017 V. Description of the Invention (ίο) Figure. Fig. 16 is an operation waveform diagram of the liquid crystal display device when the display pattern shown in Fig. 8 is displayed. FIG. 17 is a diagram illustrating the results of displaying the display pattern by the liquid crystal display device. Fig. 18 is an operation waveform diagram of the liquid crystal display device shown in Fig. 10 when the display pattern is displayed. FIG. 19 is a diagram illustrating a result of displaying the display pattern by the liquid crystal display device. Embodiment of the Invention An embodiment of the present invention will be described below based on Figs. 1 to 12. The liquid crystal display device of this embodiment drives a simple matrix liquid crystal display panel according to a voltage averaging method, and displays an image corresponding to display data. This liquid crystal display device is provided with a liquid crystal display panel 1, a signal-side driving circuit (signal-side driving mechanism) 2, a scanning-side driving circuit 3, a control circuit 4 and a power supply circuit (power supply for correction) 5 as shown in Fig. 1. The liquid crystal display panel 1 is configured by arranging a plurality of scanning electrodes Yi to YM and a plurality of signal electrodes Xi to XN to form a parent fork. The signal-side driving circuit 2 applies a signal voltage based on the display data to each of the signal electrodes to XN. The scan-side drive circuit 3 sequentially applies voltages to the scan electrodes Yi to YM. The control circuit 4 controls the two driving circuits 2 · 3. The power supply circuit 5 generates a voltage necessary for driving. For convenience of explanation, when the positions of the electrodes Xi to XN · Yi to YM are not specified or collectively referred to, the subscripts are omitted by using signal electrodes X, for example. On the other hand, when there is a specific position, the value is 1 to N, 1 to M, or 1 to N.

Page 15) 丄 6017 V. Description of the Invention (H) Any integer within the range of M]] as a subscript indicating the position of any integer i within the range. -Every time, the white and white scan electrodes are sequentially scanned, the scan side scans the scan gate, and the scan clock Lp AC signal FR and scan electrode Y of the circuit 4 are applied. To the non-selected parties, the non-selected voltage V3 of the power supply circuit 5 is applied. Another: Data:! Number: Two-action circuit 2 is based on the display data from control circuit 4. d Display: ΐ: n: Two-scan clock LP and AC signal FR, corresponding to. These two ::, ° K electrodes xι to XN, at the applied signal voltages V2a 4V4a / the above voltages V1 to V5 are shown in the following formula ⑴, and are set as: VI > V2a > V3 > V4a > V5… Road 2 is used to drive the liquid crystal of the liquid crystal display panel. The driving power of the signal side is based on the parent fluidized signal FR. According to the display data, 0N " (light on) 2: Switch the voltage V2a or V4a Output, scan side driver ^ 3 is to switch and output voltage or voltage V5h. Electrode x In the liquid crystal of the liquid crystal display panel 1, the scanning electrode and the signal are applied to a portion of the two electrodes (a liquid crystal capacitor, a pixel PIX, ...)), and a voltage corresponding to a potential difference of λ 1〆 is applied to the portion. The transmittance varies depending on the effective voltage applied to the liquid crystal capacitor. & By controlling the voltages to the electrode 1 ^ electrode X1 to χν and the scanning electrode ν Υμ, the display of the liquid crystal display surface A can be controlled. Wang Tusu 1 " 1, 1, υ ~ ΡΙχ (N'M) display Status, can display one image based on plate 1 Α shell material. Χ ’The following is for the convenience of explanation. It shows the negative display of the liquid crystal display surface. Brother, that is, as the effective voltage becomes larger, each pixel ριχ is

Page 16 516017 V. The description of invention (12) is shown as a redundant description, but of course the opposite is also true. -The ruler is used for the positive display here. In order to prevent unevenness in the liquid crystal display device of this embodiment, it is caused by the distortion of the first display trace signal waveform caused by the change in the signal voltage; and the second The display does not show "" Pole I side, charge and discharge to the liquid crystal capacitor caused by the sweep voltage change, "which occurs due to signalization; has the following structure. ~ The signal voltage is blunt, that is, the voltage generating unit 51 of the power supply circuit 5, In addition to the voltages VI · V2 · V3 · V4 · V5 used, it can be said that the normal voltage V2s · V4s is applied to the drive. In addition, the power supply circuit 5 is provided with any of the correction voltages V2 · V2s. One of them is the signal voltage V2a to 'its selection switch 53, which is to select any one of the output voltages V4 · ν'; and to turn on the output. The horse signal voltage V4a to the above-mentioned switch 5 2 · 5 3 is the result of the judgment of the skew correction (the first correction amount determination mechanism) 6 as described later, and the blunt & amp generation unit, the second correction amount determination mechanism. The generated signal is controlled by the control signal S1 · S2 sent from the unit == ^ to control the basin on / off. The liquid crystal display device increases or decreases the average value of the effective voltage applied to the liquid crystal capacitor according to the difference between the two on-times of the two switches 52.53. In this way, only one correction voltage V2s.V4s is set for each voltage V2.V4, and both the first and second display unevenness can be suppressed. The following is for convenience of explanation. It is explained that the correction voltage V 2 s · V 4 s is set to the value of the effective output voltage V2. V4 to increase the effective voltage. Specifically, it is set to V2 < V2 s and V4 & lt In the case of V4s, but set as

Page 17 516017 V. Description of the invention (13) ---- The value of effective voltage reduction is also acceptable. On the other hand, based on the display data 0, the above-mentioned skew correction signal generating section 6 corresponds to the number of changes in the potential of the V2 side ⑽! ^ And the number of output electrodes K1 of the correction voltage V2s, and will indicate the value of the output period of the correction voltage V2s. ^ To output. In addition, based on the display data D, a value T2 representing the output period of the correction voltage V4s corresponding to the change number ⑽ ^ of the potential at the V4 side and the number of output electrodes K2 of the correction voltage V4s is rotated out. The above-mentioned change numbers 变化 丨 and output electrode numbers KI and K2 will be described later.

In the present embodiment, the above-mentioned correction value has been adjusted. Τ 2 is the reference value corresponding to the above-mentioned change numbers DRQ1 and DRQ2, each set to "] ^, VAL \ (2) and (3) ). T1 = VAL1 + Klx VAL3 · (2) ding 2 = VAL2 + Κ2 x VAL3 ... (3) In equations (2) and (3), 'VAL 3 is the correction coefficient, which can be set in the parameter The setting portion 9 is arbitrarily set. In the present embodiment, the correction voltage v 2 s · V 4 s is set to a value that increases the effective value of the driving voltage applied to the pixel. The system of VAL1 · VAL2 is set to increase as the number of changes DRQ1 · DRQ2 becomes larger.

In addition, the skew correction signal generating section 6 reads the values corresponding to the above-mentioned self-variation numbers drqi and DRQ2 from the table stored in the parameter setting section (parameter memory mechanism) 9 and reads the reference values VAL1, VAL2 and Correction factor VAL3. That is, as shown in FIG. 2, the skew signal generation unit 6 includes a data number storage unit 6 1, a front-line data number storage unit 6 2, a change number detection unit 6 3, an access unit 6 4, and a data number acquisition unit 6 5 And the correction value determination section (weighting mechanism) 6 6.

Page 18 516017 V. Description of the invention (14)

The number-of-data storage unit 61 stores the number of occurrences (data number a) of a value indicating a signal voltage (for example, V4) in the display data D displaying a certain scanning column (column j). The front row data number memory section 62 stores the number of occurrences of the value of the signal voltage (the number of data b) in the display data D corresponding to the previous scan row (j-1 row). The variable detection unit 63 compares the data numbers a and b of the two scan columns (j-th and j-1 columns), and obtains the two variables DRQ1 and DRQ2. The access unit 64 accesses the parameter setting unit 9 based on the two change numbers drqi.DRQ2 to obtain the reference value vali.VAL2 and the correction coefficient VAL3. The number-of-data acquisition unit 65 refers to the above-mentioned number-of-data storage unit 61 ′ to obtain the number of V2 data (the number of output electrodes) and the number of the V4 data (the number of output electrodes) K2 of the j-th column. The correction value determination unit 66 calculates the correction value η · T2 based on the above-mentioned values vaLI to VAL3 · KI · K2 and the above-mentioned expressions (2) · (3). In addition, the skew correction signal generating section 6 is applied from the control circuit 4: display data D; a scan pulse Lp indicating the time at which the display data D is acquired; and a determination of the correspondence between the display data D and the voltages V2 and V4, which is more AC than the above. The signal FR is an AC signal FRa at a phase earlier in the horizontal period.

In the case where the AC signal FRa is “Η”, in the display data d, the display data corresponding to the voltage V 4 is π off π (not lit). Therefore, as long as the above two data number memory sections 61 and 62 calculate and display the display data d of "off", the number of rounds &, b of the voltage ν 4 in the jth column and the j-1th column can be obtained. In the case where the parent fluidized k number? 1 ^ 8 is "L", the display data of " on " (on) corresponds to the voltage V 4. Therefore, in the display data d, as long as the calculation shows 11 on " Display data D, the output numbers a and b of voltage V4 can be obtained. If set here,

P.19 516017 V. Description of the invention (15) Since… Electrically from V4 = to V " flat signal electrode X =, then the corresponding scanning electrode on the W plane is Sd, the number of output electrodes of level b The system is Sc + Sd. In addition, the number of output electrodes a of the V4 level a in the f X factory and the middle of the second power plant f is Sb + Scl. The V4 of Emperor II's scanning electrode L is: b-a = Sc-Sb, which is the difference between the number of signal electrodes that changes from μ to the kernel "V2 intersection number ⑽ 卩 1 to V4. The number of electrodes is the same as DRQMa-b from V2. The number of variations of the 'voltage V4' is different. Therefore, the above-mentioned variation detection unit 63 can be obtained from the above two tanks. However, in this embodiment, = and 2 =, so the access of the cymbal 9 becomes easier, and the two changes are set to a non-negative value for the wheat number. That is, the following equations (4) and (5), Q — and DRQ2 are set as DRQ1 and DRQ2 plus the change from the total number of electrodes in a scan line = 1 dB.丨 The offset value N of the j, ... (4) DRQ1 = N + (b—a) DRQ2 = N + (a —b) ^ This, for example, in the case of _ «AM and other memory mechanisms , The change number DRQ1 and DRQ2 can be used as the address of ^ 7 # & ^, which can reduce the procedure call when accessing. 9 points as parameter setting section

In addition, although the above formula ⑷ · ⑸ is based on the number of signal electrodes N as the offset value, the above-mentioned change number DRQ1 and ⑽㈣ are within the range of the memory address, and may also be a value Q of N or more.

Page 20 516017 V. Description of the invention (16) In the parameter setting section 9, as shown in Table 1 below, a group of people storing the number of changes (drqi, DRQ2) and the reference values (VAU, vAL2) corresponding to 拎 are stored. [Table 1] 'Change number 0 N / 10 2N / 10 N 18N / 10 19N / 10 2 N reference value a 0 a 1 a 2 a 3 a 4 a 5 a 6 In this embodiment, the above-mentioned correction voltage V2s · V4s is set to increase the effective value of the driving voltage applied to the pixels. Therefore, in Table 1 above, each reference value α0 to α6 is set to α〇 < α1 < ... < ... < α4 < α5 < α6. In order to suppress the second display unevenness, the passivation correction signal generating section 7 outputs a correction pulse signal so to the integrated correction signal generating section 8 and outputs a correction pulse signal so to the signal-side driving circuit 2. It is only right that the integrated correction signal generating unit 8 instructs to output the correction voltage V2s. V4s to the power supply circuit 5 during the output of the correction pulse signal s ′. In addition, the signal-side driving circuit 2 is shown in FIG. 4. In response to the presence or absence of changes in the display data d of each signal electrode χ, it is determined whether to transmit a correction voltage “3 v4s” to the signal electrodes χ˜χΝ. The pulse amplitude of the correction pulse signal so is based on the above-mentioned reference value VAU.vU2 is based on the above parameters The trimming fan reading ^ VAL read from the table stored in the setting section 9 is determined. Also, in the case where the signal-side drive circuit 2 chooses not to transmit the change h, the voltage of the pulse amplitude of the correction pulse signal S 0 changes. (The voltage change of the correction pulse signal S◦) is not communicated. The correction pulse k SOA is set to a pulse width of the correction pulse signal 30 or more, and is applied at the same time as the correction pulse signal SO or earlier. ... and, really

Page 21 516017 V. Description of the invention (17) The application mode is to apply the self-correcting pulse signals S0. Soa to each other simultaneously. -Pulse amplitude of 々U Here, the above-mentioned signal side drive circuit 2 is shown in Figure 3, and stores =, Af-1 lock 22, 8 flash lock (flash lock circuit) 23, output, system: bit temporary, level shift Positioner 25 and output | zone actuator 26. The industrial circuit 2 4 will show the data d due to the fact that Cunjie 2 1 is under transmission. a «Lock 22 is based on the clock CK and data D is transmitted at the end point:: f P: Displayed in the-line above Display data D is held. B door lock 23 ° phase \ column (column j column) will correspond to the previous one (column b i) ./ Same-based system is based on the scan clock ", control circuit 24, based on Putian, D of J The poor material D is maintained. The output is from the two qings 2. ί = the signal 1 describes the correction pulse that is discontinuous 'will be used to select two' to detect each display data D is continuous or the bit 25 is used to output the control voltage The signal is rotated out. The electric translation drive 26 is level-shifted based on the rounds of electricity = circuit M. The voltage applied to output 5 is shifted: ㈣, each output is selected by the power circuit. The 控制 4a or 咼 impedance output (ΗZ) is the output of the 'control signal side drive circuit 2'. 516017 V. Description of the invention (18) [Table 2] FRD j -1 D, S 0 a Actual output potential LLLLV 2 a V 2 H HZ V 2 Η LLV 2 a V 2 HV 2 a V 2 s LHLV 4 a V 4 HV 4 a V 4 s Η HLV 4 a V 4 H HZ V 4 Η LLLV 4 a V 4 H HZ V 4 Η LLV 4 a V 4 HV 4 a V 4 s LHLV 2 a V 2 HV 2 a V 2 s Η HLV 2 a V 2 H HZ V 2 ❿ In the above Table 2, &, each represents the display data D corresponding to the scanning column (column j) in each signal electrode X, and Display data D corresponding to one scan column (column j-1). In addition, "output state" indicates the output state of the output driver 26 to the signal electrode X, and "actual output potential" indicates the potential actually output to each signal electrode X after controlling the output state.

Page 23 516017 V. Description of the invention (19) In addition, instead of setting the signal-side driving circuit twice, material D, it is set to output potential data. It is recognized that the Dabbe material is not used as the display signal of the AC signal FR, which is fixed at "H",:; = signal side drive circuit 2 Even if the AC signal FR is reversed: y. In: In the structure, the output potential of X changes and the correction j can also perform the corrective action in response to the signal electrode. Even if the yoke is added to W, it can be achieved. For the monthly condition, the correction pulse signal so by the simple logic electrical correction signal generating section 7 is shown in Fig. 6 and Fig. 9 J. Passivation, at the end and the correction indicated by the correction pulse signal s〇 = 图 " ϊ 正 = 52 Is turned on, during the period indicated by the correction pulse signal s = ίι 二 二 太 / 々, the two switches 52 · 53 each output a control signal S1 in a manner that the switches 53 can be turned on. S: V is connected here, at In the control signal S1 (S2), 'and the correction value τ ani pulse P2), if it does not correspond to the pulse corresponding to the correction pulse signal s0: ρ', the starting time point can be set to an arbitrary time point. However, if the starting point is too late, the correction value T1 (T2) becomes the maximum, and in the same scan, the pulse P1 (P2) may end. Here, the starting point is controlled at an earlier point in time so that the pulses P 1 (P 2) can be knotted or bundled. The above-mentioned unit setting unit 9 can be realized by a general circuit such as a memory mechanism such as ra Μ or R 0 Μ or a calculation circuit, or a combination thereof. The above-mentioned values VAL · vali can be obtained from outside the liquid crystal display device. ~ VAL3 instructs the above-mentioned two correction signal generating sections 6 · 7. 516017 V. Description of the invention (20) In the following, the first and the first of the above structure? ^ Structure for a comparison-illustration. The uneven control action and the knowledge that the unevenness is caused, that is, when the liquid crystal display panel wants to be 1% of the liquid crystal display panel, especially the uncorrected voltage, the conventional AC signal FR of the display pattern that is not shown in the figure is reversed. The reading “,” and “忖 中” are shown in Figure 14 and ^. As shown, the brightness of pixel B = = the value changes, and the display is uneven. ', Er said again, and the first work occurred. In this case, the display mode D is shown in Fig. 6. In Fig. 6, the period of the display pattern is different from that of Table 1. The period of the signal S2 is changed to the correction voltage V4: the driving waveform of the voltage (Xa-YJ) and the driving waveform of the pixel B. Therefore, the correction is as shown in the figure. Therefore, the actual value of the induced distortion is If it is corrected, the brightness of pixel A becomes the same as that of the pixel, and the display is uneven. I 帀 j Γ brother 1, specifically, the scanning-side driving circuit 3 scans the column d + 1. Scanning and expansion, transmitting the dH column to the signal-side drive circuit 2 as the d column display data ^ J and the number of occurrences of the V4 potential levels a and b in each column are stored in the memory of the number of data The unit 61 and the former data number memory unit 62. Therefore, based on the value of a and b, the change number detecting unit 63 calculates the two variable DRQ1 and DRQ2 of the voltage V2 and the voltage V4, and the access unit 64 changes the two change numbers DRQ1. DRQ2 instructs the reference setting section 9 to obtain the reference section VAL1 · vaL2. Here again, the display including the vertically long block pattern shown in FIG. 5 is displayed here. In the pattern, as shown in Fig. 6, the AC signal is displayed! ^ Is reversed between column d and (d + 丨).

516017 V. Description of the invention (21) / month / brother ... In the d-th column, the number of the signal electrodes X which become the V4 potential level " ^ value b) is (9 N / 1 0), the dth The number (calculated value a) of the 仏 electrode X ··· at the V 4 potential level in the +1 column is (1 ^ 1 0). Therefore, based on the above-mentioned formulas ⑷ and ⑴, the variable number determining unit 63 determines that ^ = DRQ1 corresponding to V2 is (18n / 10), and the number of changes DRQ2 corresponding to V4 is (2 ^ 10). The value α 4 corresponding to (1 8 N / 1 〇) is read from the parameter setting unit 9 and is used as a reference value vau representing the base period during which the correction voltage V2s is applied. The value α2 corresponding to the plant's (2N / 1G) is read out as the reference value VAL2 indicating the basic period of the correction power C. In addition, it is set according to the parameter. ：: value VAL ′ The passivation correction signal generating section 7 outputs the correction pulse signal of pulse VAL · soa. n a again, the number of outputs of the lean material number obtaining unit 65 based on the voltage V4 of the (d + 1) th column

K1,; 2, (N / 1.? Are the singular value of the rotation number of the column V2. V4 and the value VAL3 obtained from the wheat number setting section 9, the correction value = section = based on the above formula ⑴ and formula ( 3) Correcting each of the above-mentioned basis will output the correction value η Μ 2 during the period of application of the voltages V2s and V4s without correction. The correction T? Filling correction signal generating section 8 is based on the correction pulse signal "and positive values". ΤΙ. Τ2, output control signals S1. S2. That is, the self-number generation unit 8 outputs: pulse p0 with a pulse width VAL and pulse ^. (= 4 + 9N / 1 10. VU3) pulse formation The control signal "; and the control letter S 2 formed by the pulse P2 of the pulse = 0 and the pulse amplitude (a2 + N / 10. VLA3). Here, it is exchanged between columns d to d + l. Signal FR is upside down

516017 V. Description of the invention (22) ^, the voltage Xa (Xb) of each signal electrode Xa (Xb) must also be reversed.丄 The driving circuit 2 is shown in Table 2 in the description. The output of the driver 26 on the side of the pulse plus sign 并非 is not high impedance, and ‘control K, wheel V2a (V4a). Therefore, between the above-mentioned pulse P0, the signal electrode ^ is the positive voltage E2 for the ink, and the correction voltage is applied to the signal electrode Xb to 3.3. The driving waveform of each pixel A. B is shown in Fig. 6 () — — — (Χ — γ), such as during the pulse P 0, is corrected so that the driving voltage applied to the pixel increases every time. Therefore, the effective value is increased due to each signal electrode fork. X The second part is the uneven display caused by the waveform passivation caused by the passivation caused by the value passivation. The second pulse is caused by the waveform passivation. ^ Because the pulse amplitude of the pulse P1 is set to be larger than the pulse ρ2. The reason why the pulse length is long is that the period during which the correction voltage V2s is applied to the signal electrode-the period during which the correction voltage V4s is applied to the signal electrode ^ can be corrected for the effective value of ^ =. Therefore, for the non-selected scan electrode γ. The pixels that cause the real value to fall due to the skew. That is, for the factors that include the output side of pixel A, the pixels that increase the effective value with the induced skew described above, that is, the output side that contains V4 with pixel B. Compared with pixels, larger corrections can be made. The same 'in communication The signal "quote (d + 4) of the column is reversed again. The signal electrode associated with pixel A is only applied with the correction voltage V4S during the period of T2 = α 4 + 9N / 1 〇 VAL3. The signal electrode & associated with the element β is only applied for a shorter period (Π = α2 + Ν / 10χ VAL3), and the correction power is applied ^ V 2 ° to the pixel that induces skew to reduce the effective value, That is, for the pixels on the output side of the V4 wheel containing pixel A, compared with the pixels that induce skew to increase the effective value, that is, compared with the pixels on the output side of V2 containing pixel B, it can be 516017. Explanation of the invention (23) Make a larger correction. On the other hand, if the scan and interpolation is not reversed, due to the condition of the wheel w, the second display voltage does not change due to the passivation of the parent fluidized signal waveform. Therefore, during the period when the signal-side driving circuit 2 is being applied, the driver 26 of this embodiment is kept at a high impedance and wide positive pulse signal S0a, and the correction voltage V2s.V4s will be output during this period. Although the power circuit of 5 rounds & V9 VA on% " electrode xa · xb output voltage remains V2 · V4, ^ side Dynamic Thunder 1 1 Mu Shiluer Road 2 does not modify the actual value. In addition, the parent fluidization signal FR is not stubborn, the master is not in a position, the soil is ——, the situation where the wood is down does not occur In the 晶 1 crystal display device which is not displayed due to induced skew, the voltage V2 is greater than or equal to 4? The liquid value of the present embodiment is the same as the two pulse signals. The values of v and v are the same as each other, including pixels. A of the "output side 3": "phase: value". The pixels on the side are modified approximately the same size. ^ The results are so large that although the power supply circuit 5 only produces v2. 仏 · to. ^: 4 Individual-The voltage of the electric I used as the driving electrode of the blunt electrode is also shown in Fig. 5. The degree is consistent with the degree of the needle, which can prevent the i-th display unevenness. Based on the electric voltage and M, in order to make the output pulse more long as the pulse amplitude becomes longer, the weighting process is performed on the basic period of Π.P2 (VAL1.VAL2). Any signal line can be corrected. Here, as shown in the figure, if the load becomes larger, the signal waveform will passivate at

Page 28 516017 V. Explanation of the invention (24) Since the actual value 21 of the modified part is established, the actual value will be reduced. Regardless of the size of one of the loads, if the correction voltage v2 is applied during the same period, 4 ^

, Depending on the difference of the negative power valley, the actual effect of the driving waveform S may be uneven brightness. Recurrence occurs, but the correction value determination unit 66 of this embodiment is as above. Based on the output number of V2 04, it is increased during the basic period. It can suppress the actual effect of the driving waveform caused by: Difference in values. According to this, a liquid crystal display device with less uneven brightness and higher display quality can be obtained. shell

On the other hand, in the case where the display pattern shown in FIG. 8 is to be displayed, especially in the conventional technique in which the voltage is not corrected, as shown in FIG. 16, each time the scanning line is switched, it is caused by induced distortion. The effect value changes, as shown in Figure 丨 7 = 'The brightness of pixel A is lower than that of pixel B, and the first display unevenness will occur. On the other hand, in the present embodiment, when display data D displaying the same display pattern is applied, as shown in the period (dH) in FIG. 9, the number of V4 potential outputs in the line (d + 1) (Calculated value b) is 9N / 10, and the number of V4 potential outputs (calculated value 3) in column d is 0, so the number of changes can be calculated ... two N / 10, the number of changes DRQ2 = 19N / 10, V2 output number K1 two N / 10, and V4 output

The number K 2 = 9 N / 1 0. Then, the integrated correction signal generating section § outputs: a control signal S1 formed by the pulse p0 of the pulse amplitude VAL and the pulse P1 of the pulse amplitude (αΐ + N / IOχ VAL3); and the above-mentioned pulse P.0 and the pulse amplitude (Α 5 + 9N / 1 QX VAL3) is a control signal S2 formed by the pulse ρ2. Here, the base period α 5 of the pulse P2 is set to be longer than the base period 1 of the pulse P 1. Therefore, the non-selected scanning electrode γ. Pixels induced by the above-mentioned induced skew that reduce the actual value, that is, the pixels on the V4 output side of the pixel A, and increase the actual value

Page 29 516017 V. Description of the invention (25) Larger pixels, that is, pixels with larger input on the output side of V 2 that contains pixel B, have a larger correction compared to ^ u u. -Also in the case of the (d + 2) column, the induced skew occurring on the non-selected scan electrode γ IC makes the pixels A · B both reduce the effective value. In the case of the two pixels A · B When the same voltage is applied (in this case, V2a), the same amount of correction for induced distortion is performed. Again, the first? The waveform passivation of the cause of the unevenness of g ′ & 卩, μ can be corrected by the correction voltage V2S or V4s only during the pulse ρ 0 when the voltage changes. / a% is based on the result of S. Although the power circuit 5 only generates 4 voltages for the pass-through voltage, as shown in FIG. 8, each column displays the display of ° ^ ~ line private pixels. In the pattern, the brightness of the pixel A can be made the same as that of the pixel B, and the first display unevenness can be prevented. Even in this case, it is the same as the case where the display pattern shown in FIG. 5 is used. The base period related to the output numbers K 1 · K 2 is emphasized, and the effect caused by the difference between the output numbers KI and K2 can be suppressed. The difference in value can realize a liquid crystal display device with higher display quality. In the case where the display pattern shown in FIG. 10 is to be displayed, in particular, the conventional technique that does not modify the voltage is as shown in FIG. 18, and the signal voltage waveform is passivated due to the change in signal voltage, as shown in FIG. 19, because 2 Display unevenness, the brightness of pixel B is lower than that of pixel A. Relative to f: In this embodiment, when the same display image is applied to display Beco D, as shown in FIG. 11, during the (dH) column, the number of V4 potential output in the column (calculated value a) For (to 20), the first column is. The number of bit outputs (σ ten different values b) is (N / 20), so the number of changes DRQJ can be calculated.

Page 30 516017 V. Description of the invention (26) N, the number of changes DRQ2 = N, the number of V2 outputs K1 to 19N / 20, and the number of V4 outputs K2 = N / 20. Therefore, the integrated correction signal generating unit 8 outputs: a control signal S1 formed by the pulse P0 of the pulse amplitude VAL and the pulse P1 of the pulse amplitude (3 + n / 2q X VAL3); and the above-mentioned pulse P0 and the pulse amplitude (^ 3 + i9N / 20x VAL3) is a control signal 82 formed by the pulse P2. Here, the basic period of the self-pulse P 1 · p 2 is set to the same length (α 3 t. According to this, the $ pressure applied to the signal electrodes Xa · Xb corresponding to each pixel A · β 'is not related to It is voltage V2a or voltage V4a, and the same correction is applied to the correction of induced distortion. Therefore, no two pixels A · β of brightness difference caused by induced distortion have occurred, regardless of whether the correction voltage V2s or V4s I is applied. In terms of ft, the above-mentioned integrated correction signal generating unit 8 displays the control signal S 1 on the surface. It is not only the above-mentioned induced skew correction pulse 1 " 1 (P2), but also the PΠ and the correction pulse. The signal S0a is a pulse for passivation correction with the same pulse amplitude. The output voltage i Γ Γ drives circuit 2 under the condition of positive pulses like dream signal sn I in column d + i, as shown in Table 2 above. As shown in the figure, during the display repair period, the output of the output driver 26 is not the letter S: x, V2a (V4a) of the high-impedance column. In contrast, the power is output when the pulse signal is called The situation of the change of the abolition system 'is displayed in the correction correction cliff, and it is maintained at this point B, and the output driver 2 6 The output is maintained at the high-impedance output voltage of the signal electrode X ^ ^. Therefore, during the pulse P0, the positive voltage va4s ΛΓ is still maintained at the potential V2, and a repair is applied to the signal electrode core. 11 *, during the driving waveform α-υ of the pixel β, the penetration value is modified to increase,

Page 31 516017 V. Description of the invention (27) " Increases the part where the effective value is reduced due to waveform passivation on average. According to these results, as shown in FIG. 10, the brightness of the two pixels A · b becomes the same. Second, the occurrence of the second display unevenness caused by the waveform passivation is suppressed. In addition, it is based on the same correction voltage V2s.v4s as the waveform skew correction, and the correction of the wave-7 passivation, and the case where the two correction voltages are set separately. The ratio of the power supply circuit 5 can be reduced. scale. Moreover, even in this case, it is the same as the case of displaying the display pattern of FIG. 5, and the base period related to the output number KI · K2 is emphasized. Therefore, each constrained = the actual effect caused by the difference in the output number KI · κ2 The difference in value can be seen in the LCD display device with more southern display quality. You are here, although the above is an example of the display pattern that most shows the first and second display unevenness caused by induced distortion or wave passivation, to explain the self-display unevenness: control action, but as described above It can reduce the two types of display unevenness caused by induced distortion or waveform passivation. Even for other patterns, the self-display unevenness can be reduced, and a high-quality liquid crystal display device can be realized. Although ^ 'This embodiment is described by taking the case where the correction voltages V2s and V4s are set to be small = 1 and the voltage is increased as an example, the same effect can also be obtained when the effective voltage is reduced. In this case, it is shown in the above table i. 基准 Set each reference value α0 to α6 as α0> α1> α2> .. > α3 Series > Can 4 > α 5> α6. For example, the logic of the output control circuit 24 may be changed to cause the signal-side driving circuit 2 to perform the operations shown in Table 3 below, instead of Table 2 described above. ’,

516017 V. Description of the invention (28) [Table 3] FRD, a D i S 0 a output state actual output potential L Η LLV 2 a V 2 H HZ V 2 LLLV 2 a V 2 HV 2 a V 2 s Η HLV 4 a V 4 HV 4 a V 4 s LHLV 4 a V 4 H HZ V 4 Η Η LLV 4 a V 4 H HZ V 4 LLLV 4 a V 4 HV 4 a V 4 s Η HLV 2 a V 2 HV 2 a V 2 s LHLV 2 a V 2 H HZ V 2 In addition, when the correction voltages V2s and V4s are set to reduce the effective voltage, as shown in FIG. 12, as in the case of FIG. 7, when the load is large 'The applied waveform will be more passivated. However, unlike the situation shown in Fig. 7, in the correction part, the effective value Z3 < Z4 is established. Therefore, in this case, when the correction value determination unit 66 corrects the output number K 1 · K 2 during the correction base period,

Page 33 V. Description of the invention (29) The smaller the load becomes, the less the weight is, and the uneven the brightness is: :: Large, it can prevent the distortion caused by the negative street power and the inherent shape. Revise Lu% * —;: ΐ Ping 丄 丄 emotional, to determine the basis of ί 9 '? ： In the skew correction signal generating section 6 and the parameters are set as an example, and it is extended to 1::: 乂 W when the values are the number of changes, such as when the number of changes: refers to the memory capacity of the setting section 9 Degree, = can also be reduced to fully reduce the display unevenness setting section 9 of the two forms of the main office although the description of the skew correction signal generating section 6 from the parameter value T1. 72, the table of the bu, read the reference value VAL1 ML2, calculate the correction value D1. ^ A »Ren responds to the increase or decrease in the number of crosses, and corrects the increase or decrease in the appropriate amount. It is not necessary to calculate the formula 2 2. In addition, even if the coefficients of the reference table are used to read out A jLl · VAL2 itself, and the correction is read, most of them are faced with each change several times. The change of the display value η / ding2 occurred on the panel 1 on the panel 1 ... Observe the liquid crystal display value ding1 · Τ2, and this correction value: Temple 'to find the correction with the least display unevenness: road structure, more appropriate The second table of reduction: $ can be more simple and VAL, and those who follow the table can be simpler. Mouth 516017 5. The circuit structure of invention description (30) is a value that can properly eliminate display unevenness. In addition, in this embodiment, the two switches 5 2 · 5 3 of the power supply circuit 5 are switched twice to correct the second display unevenness (on both sides of the pulse P 0), and to correct the first display unevenness 2 (On both sides of the pulse PI (P2)), but is not limited to this. For example, the integrated correction signal generating section can also generate the control signal S 1. As a single pulse combining the pulses P0 · P 1, it can also generate the control signal. S 2 is a single pulse combining pulses P 0 · P 2. Even in this case, if the application period of the correction voltage V 2 s · V 4 s is the same, the same effect can be obtained. In addition, this structure reduces the number of times the power supply is switched from four to two, thereby reducing the power consumption of the logic and power circuit sections. The liquid crystal display device of the present invention is a driver that drives the liquid crystal display panel based on the display data. In addition to the signal-side driving mechanism and the power source for correction, the liquid crystal display device also includes a first correction amount determining mechanism that is driven on the signal side. The mechanism changes the number of output voltages corresponding to the above-mentioned display data, and individually determines the application period of the corresponding correction voltage as the correction amount. According to this structure, the periods during which each of the above-mentioned correction voltages are applied are determined in accordance with changes in the output number of the corresponding voltages. Therefore, even if induced distortion occurs at the scanning electrode, the actual value of the liquid crystal element corresponding to the intersection of the scanning electrode and each signal electrode changes. According to the difference between the above application periods, the actual value caused by the induced distortion can be offset. The change. Therefore, similar to the liquid crystal display device described above, although the circuit structure is simple and the manufacturing cost is lower, the first display unevenness caused by induced distortion can be suppressed, and a liquid crystal display device with high display quality can be realized.

P.35 516017 V. Description of the invention (31) In addition, the above-mentioned first correction amount determining mechanism of each structure may further include an aggravating mechanism, and its staff * adjusts each of the corrections based on the number of signal electrodes that output the voltages for each correction. During the application of voltage. According to this structure, the application period of each correction voltage can be adjusted according to the number of signal electrodes that output each correction voltage, that is, the load. Therefore, in the case of a large load, in the driving waveform of each liquid crystal when the correction voltage is applied, even when a signal passivation larger than the case of a small load occurs, the liquid crystal caused by the signal passivation can be offset. Effective voltage value. Therefore, it is possible to suppress the uneven brightness caused by the different load, thereby realizing a liquid crystal display device with high display quality. Further, in each of the above structures, the signal-side driving mechanism includes: a latch circuit that stores display data for one scanning horizontal period; and an output control circuit that determines the output to each of the circuits based on the output of the latch circuit. The voltage applied by the signal electrode; the above-mentioned first correction amount determining mechanism refers to the signal whose phase is only one scanning horizontal period earlier than the parent fluidized signal used for the parent fluidization to drive the liquid crystal, and the reference phase is output from the latch circuit The data is displayed only in the early one horizontal scanning period to determine the correction amount corresponding to the output of the above-mentioned latch circuit. According to this structure, based on the display data and the AC signal that are earlier in phase than the output of the latch circuit, a correction amount corresponding to the output of the latch circuit can be calculated. The first correction amount determination mechanism. The structure can indicate the same as the display data. The amount of phase correction. Therefore, correction can be performed more accurately, and a liquid crystal display device with higher display quality can be realized. Further, in each of the above structures, the first correction amount determining means may be provided.

Page 36 516017 V. Description of the invention (32) A parameter storage mechanism is used to memorize the correction values or correction coefficients that are referred to when determining each of the above application periods. With this structure, the first correction amount determining means can set the application period of each correction voltage to the most appropriate value by referring to the correction value or correction coefficient of the parameter memory means. Therefore, compared with the case where the application period is calculated only by calculation, a liquid crystal display device having a simple structure and a higher display quality can be realized. The specific implementation forms or embodiments in the description of the invention are only used to explain the technical content of the present invention, rather than to limit the present invention in a narrow sense. Within the spirit of the present invention and the scope of the following patent application, various changes can be implemented Φ 〇 [Description of symbols] 1 LCD display panel 2 Signal-side driving circuit (signal-side driving mechanism) 5 Power supply circuit 6 Skew correction signal generating unit ( 1st correction amount determination mechanism) 7 Passivation correction signal generation section (2nd correction amount determination mechanism) 8 Parameter setting section (parameter memory mechanism) 23 B latch (latch circuit) 26 Output control circuit 6 6 Correction value determination section ( Weighting agency)

Xi ~ XN signal electrode Y 丨 ~ scan electrode

Page 37

Claims (1)

516017 6. Scope of patent application 1. A liquid crystal display device, comprising: a liquid crystal display panel ^ panel, which is provided with a liquid crystal layer between a plurality of signal electrodes and a plurality of scanning electrodes which are mutually crossed, based on the display Display image display _ For those who are encouraged, the signal-side driving mechanism is a voltage- corresponding to the above-mentioned display data, which is applied to each of the above signal electrodes; the f source for correction is used to generate and respond to Those correction voltages corresponding to the one-to-one voltages in the display data are replaced by the generated correction voltages and output to the signal-side driving mechanism; and a first correction amount determining mechanism, which is For the change of the effective voltage value applied to the liquid crystal layer, the change period of the application voltage of each correction voltage can be used to cancel the change, and the application period of each correction voltage is determined as the correction amount; The change in the voltage value is due to the change in potential applied to each of the signal electrodes according to the signal-side driving mechanism. Caused by the skew of the waveform. 2. For the liquid crystal display device of the first item of the scope of patent application, wherein the first correction amount determining mechanism includes an aggravating mechanism, which adjusts the application of the respective correction voltages based on the number of signal electrodes that output the respective correction voltages. Period. 3. For example, the liquid crystal display device of the first patent application scope includes a second correction amount determining mechanism, which is based on the situation where the voltage corresponding to the above-mentioned signal electrodes and the display data changes, instead of the voltage, in a certain degree. During this period, one of the above-mentioned correction voltages is controlled by a method of outputting it from the signal-side driving mechanism. Page 38 516017 ^ Patent application scope 4. For the liquid crystal display device of the patent application scope item 1, in which the above-mentioned signal driving mechanism is equipped with: a latch circuit, which stores the display data in a scanning horizontal period; and output The control circuit determines the voltage to be applied to each signal electrode based on the output of the latch circuit. The above-mentioned first correction amount determination mechanism refers to the phase ratio and is used to drive the liquid crystal to an AC drive. The signal advances only the J signal during a scanning horizontal period; and the reference phase ratio is the display data of the above-mentioned flash lock circuit output only during a scanning horizontal period; to determine the correction amount corresponding to the latch circuit. 5. For the liquid crystal display device of the first scope of the patent application, the above-mentioned first correction amount determining mechanism is provided with a parameter memory mechanism, which memorizes the correction value or correction coefficient that is referred to when determining each of the above application periods. > 6. If the liquid crystal display device according to item 3 of the patent application scope includes integrated correction signal generating means, it is in the application period determined by the first correction amount determination means and instructed by the second correction amount determination means. At this point, a control signal instructing to output the aforementioned correction voltage is output to the aforementioned correction ~ power supply, and is a common mechanism with the first correction amount determining mechanism and the second correction amount determining mechanism. 7. The liquid crystal display device according to item 1 of the patent application range, wherein the liquid crystal display panel is driven by an AC drive. 8. For the liquid crystal display device of the scope of application for patent No. 5, in which the correction value or correction coefficient memorized by the above-mentioned parameter memory mechanism is based on the number of changes corresponding to the number of voltages corresponding to the display data being output. Setter. 9. For the liquid crystal display device in the scope of claim 5, the first correction amount determination mechanism is based on the correction value obtained from the parameter storage mechanism. On page 39, the patent application country or amendment is Lou Zhi. The above repairs = j π. Fort imposing period. The number of I-outs determines the third display range of the patent for the crystal display surface, and the wide ag is used to rotate the last block ^ called 丄 嗖 佟 工, 丨, and 汲 of the exchange 11 · 1H is controlled by voltage. Yejingxianhe :: display device is characterized by having an oblique response to be driven by AC :: two devices, where the liquid is determined by the arrangement of wheels φ. U,.,. Σ to one of the liquid crystal display panels The mechanism is the reverse action of the ancient transformation of voltage. Number ::: display h plate. Second, it is characterized by: Scanning section XL / ((Ding, Yu $ 5 >, Yi Xing / _)袓 兔 1 rabbit is provided with a liquid signal electrode and a compound electrode which are driven between them; 83 layers, based on the display signal side drive mechanism representing the display image, which is applied to the above For each of the above signal electrodes; '/, the voltage corresponding to the shell material, the power supply for correction, which generates the voltage for correction corresponding to 1 to 1, taking = ^ = 3 = the output of the moving mechanism; and the above 乜Side drive. The first correction amount determination mechanism, and the V voltage corresponding to the above-mentioned display data determined by the Institute of Ma, and the application period of each corresponding correction voltage is used as correction =. 1 The liquid crystal display device of the first item, wherein The above amendment Dong Guang decided that the structure has aggravating mechanism, which is based on the output The number of electrodes: the application of the voltage for each of the above corrections: 3. If the liquid crystal display device of the nth item of the scope of patent application is applied, the correction amount determination mechanism of Beidi 2 is provided, which is based on the above signal electrodes. display 516017 VI. Scope of patent application If there is a change in the voltage corresponding to the data in the patent application, it will replace the voltage, and in a certain period of time, one of the above-each correction voltage will be output from the signal-side drive mechanism to the controller. 14. The liquid crystal display device according to item 11 of the scope of patent application, wherein the above-mentioned signal-side driving mechanism of the stomach is provided with: a latch circuit that stores a scan and displays data in a horizontal period; and an output control circuit that is Those who determine the voltage to be applied to each signal electrode based on the output of the latch circuit; the above-mentioned first correction amount determining mechanism, and referring to the phase ratio of the AC signal used to AC drive the liquid crystal, only advances the signal during one scanning level ; And the reference phase ratio is not more than a scan horizontal period # of the output of the above-mentioned latch circuit to determine the correction amount corresponding to the above-mentioned flash-lock circuit. 1 5. The liquid crystal display device according to item 11 of the scope of patent application, wherein the first correction amount determining mechanism includes a parameter memory mechanism that memorizes a correction value or a correction coefficient referred to in determining each of the application periods described above. . 16. The liquid crystal display device according to item 13 of the scope of patent application, which includes an integrated correction signal generating mechanism, which is in the application period determined by the first correction amount determination mechanism and at the time indicated by the second correction amount determination mechanism. A mechanism that outputs a control signal instructing to output the correction voltage to the correction power supply, and shares the same mechanism with the first correction amount determining means and the second correction amount determining means. 1 7. The liquid crystal display device as claimed in claim 11. The liquid crystal display panel described above is driven by an AC drive. 1 8. The liquid crystal display device according to item 15 of the scope of patent application, wherein the correction value or correction coefficient memorized by the above parameter memory mechanism is based on the Page 41 516017 t. The number of changes in the number of output voltages corresponding to the display data of the patent application is set by the user. 1-1 9. If the liquid crystal display device of the patent application scope No. 15 item, the above-mentioned first correction amount The decision mechanism determines the application period of each of the correction voltages based on the correction value or correction coefficient obtained from the parameter storage mechanism and the output number of each voltage corresponding to the display data. 2 〇. The liquid crystal display device according to item 13 of the scope of patent application, wherein the liquid crystal display panel is driven by AC, and the second correction amount determining mechanism / system corresponds to the reaction of the AC signal applied to the liquid crystal display panel. The controller rotates to output the correction voltage. Page 42