An Area-Efficient High-Resolution Resistor-String DAC with Reverse Ordering Scheme for Active Matrix Flat-Panel Display Data Driver ICs

Seol, Hyeon-Cheon; Hong, Seong‐Kwan; Kwon, Oh‐Kyong

doi:10.1109/jdt.2016.2526042

Cited by 21 publications

(9 citation statements)

References 17 publications

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“…In the mobile UHD panel, only one data driver IC is used, and it has 11,520 data channels corresponding to all column lines in the panel. In the large‐sized UHD panel, several data driver ICs are used, consisting of 640 or 720 data channels . Regardless of the panel type, P cap is much lower than P res .…”

Section: Power Consumption Of the Conventional And Proposed Two‐stagementioning

confidence: 99%

“…A two‐stage DAC structure has typically been employed to reduce the area of the data driver IC . Figure shows the block diagram including a gamma generator, a resistor string (R‐string), and a conventional two‐stage DAC, which consists of two decoders and a DAC‐embedded amplifier.…”

Section: Introductionmentioning

confidence: 99%

“…Figure shows the block diagram including a gamma generator, a resistor string (R‐string), and a conventional two‐stage DAC, which consists of two decoders and a DAC‐embedded amplifier. The gamma generator provides gamma voltages to the R‐string to adjust the gamma value and compensate for the mismatch of the R‐string . The R‐string generates hundreds of reference voltages by voltage dividing and sends these voltages to the two‐stage DAC.…”

Section: Introductionmentioning

confidence: 99%

“…A two-stage DAC structure has typically been employed to reduce the area of the data driver IC. [8][9][10][11] Figure 1 shows the block diagram including a gamma generator, a resistor string (R-string), and a conventional two-stage DAC, which consists of two decoders and a DAC-embedded amplifier. The gamma generator provides gamma voltages to the R-string to adjust the gamma value and compensate for the mismatch of the R-string.…”

Section: Introductionmentioning

confidence: 99%

“…The gamma generator provides gamma voltages to the R-string to adjust the gamma value and compensate for the mismatch of the R-string. 11 The R-string generates hundreds of reference voltages by voltage dividing and sends these voltages to the two-stage DAC. The two decoders in the first stage of the two-stage DAC (each of which includes tree-type switch arrays) select two adjacent reference voltages according to the upper-digital code and transfer them to the DAC-embedded amplifier in the second stage.…”

Section: Introductionmentioning

confidence: 99%

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A small‐area and low‐power data driver IC using two‐stage DAC with a capacitor array for active matrix flat‐panel displays

2017

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-A small-area and low-power data driver integrated circuit (IC) using a two-stage digital-toanalog converter (DAC) with a capacitor array is proposed for active matrix flat-panel displays. The proposed data driver IC employs a capacitor array in the two-stage DAC so as to reduce the DAC area and eliminate the need for a resistor string, which has high-power consumption. To verify the proposed twostage DAC, a 20-channel data driver IC with the proposed 10-bit two-stage DAC was fabricated using a 0.18-μm complementary metal-oxide-semiconductor process with 1.8 and 6 V complementary metaloxide-semiconductor devices. The proposed 10-bit two-stage DAC occupies only 43.8% of the area of a conventional 10-bit two-stage DAC. The measurement results show that the differential nonlinearity and integral nonlinearity are +0.58/À0.52 least significant bit and +0.62/À0.59 least significant bit, respectively. The measured interchannel deviation of the voltage outputs is 8.8 mV, and the measured power consumption of the 20-channel data driver IC is reduced to 7.1 mW, which is less than half of the power consumed by the conventional one.

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Section: Power Consumption Of the Conventional And Proposed Two‐stagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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